虽然从名字上看，GX、GX II、GX III似乎是前后三代产品，但实际上它们更多地是A、B、C款式的意思。从时间上看GX系列登场的时间确实比较早，在设计上最为传统，讲究的是性价比，面向主流级市场；而GX II与GX III则是同步推出，两者在结构与功能上有相近之处，但是GX III的用料规格要更好，用上了更大尺寸的静音风扇并配置了定制款的散热片，定位上要更倾向于高端市场。

而GX II系列电源则是万金油定位，其具备GX III系列的部分特性，但同时又拥有性价比上的优势。从外观设计风格上更接近于GX III系列，同样享受10年质保服务，同属于160mm长度的ATX 3.0规格电源，采用了主动式PFC+半桥LLC谐振+同步整流+DCtoDC结构设计，通过了80PLUS金牌认证，配置有120mm直径的HDB液态动压轴承风扇，可在智能散热控制模式下实现风扇自动启停功能，让电源在散热性能和噪音水平之间取得良好平衡。

       jQuery("iframe").attr("width", "100%"); if (IsMobile()) jQuery("iframe").attr("height", jQuery("#post_body").width() * 9 / 16); else jQuery("iframe").attr("height", jQuery("#post_body").width() * 9 / 16 + 120);酷冷至尊GX II 850W电源简介预览var tableid = settableid(); document.write(''); Table().init({ header:["酷冷至尊GX II 850W"], width: '92%', columnWidth: 'MAX', //表格单元宽度，"MAX"最大内容显示，""AVG"平均，"AUTO"自动，指定[15,16,20] id: tableid, data:[ ["基本规格",""], ["型号","MPX-8503-AFAG"], ["额定功率","850W"], ["结构","主动式PFC + 半桥LLC谐振 + 同步整流 + DC-DC"], ["AC输入","100~240Vac / 10A~5A / 50~60Hz"], ["效率认证","80Plus金牌"], ["尺寸","160 * 150 * 86 mm"], ["净重","1.62 Kg"], ["风扇","悦伦 D12SH-12120mm直径 , FDB轴承"], ["质保","10年"], ["售价","899元"], ["DC输出",""], ["电压","+3.3V","+5V","+12V","-12V","+5Vsb"], ["最大电流","20A","20A","70.8A","0.3A","3A"], ["联合输出","120W","---","849.6W","3.6W","15W"], ["接口数量",""], ["24pin主供电","1个",], ["4+4pin CPU供电","2个",], ["6+2pin PCI-E供电","4个",],["SATA供电","6个",], ["D型4pin供电","2个",], ["12+4pin 12VHPWR","1个",] ] });我们今天要看的是GX II系列中的850W款式，堪称是典型的万金油级别产品，方方正正的外观凸显了它的稳重感，与外壳一体设计的网状风扇格栅既兼顾了美观，同时也起到良好的防护作用，可谓颜值与实用并重。模组线材主要以扁平化设计为主，在目前来看也是常规配置，但是12VHPWR接口采用了90度折弯设计，这在使用中要更有利于走线，也有利于确保接口的连接安全。

酷冷至尊GX II 850W内部用料电源的内部用料如下表所示，有部分元件目前尚未公开具体的规格参数。而结构方面则是采用了相对老式的设计，模组接口PCB并非直插设计，而是通过导线连接到主PCB上，各部分的元件也是拉开了足够的距离，不会产生拥挤的感觉，这是酷冷至尊对电源进行散热优化之后得出的设计。当然相对老式的设计并不意味着电源的用料规格不行，我们依然可以看到其采用了日系主电容并为高发热的电路配置足够的散热片。

预览var tableid = settableid(); document.write(''); Table().init({ title: "酷冷至尊GX II 850W | 内部用料", header: ["结构", "元件型号与数量"], width: '91%', columnWidth: 'AUTO', //表格宽度，"AVG"平均，"AUTO"自动（默认），指定[15,16,20] id: tableid, data: [["EMI部件","X电容 * 2Y电容 * 4共模电感 * 2MOV * 1"],["主电容","TK 450V/560μF/105℃ * 1"],["整流桥","GBU808 * 2800V/8A@100℃"],["PFC开关管","60SC120D * 2未查询到具体规格"],["PFC二极管","TRS6A65F * 150V/6A@25℃"],["主开关管","K25A60X * 2600V/25A@25℃/125mΩ"],["主控方案","LP9908SA + TLA2021"],["+12V同步整流","DN4105 * 440V/200A"],["+5V & +3.3V DC-DC","PWM : APW7159CON3106 + ON3102 , x2"]] });酷冷至尊GX II 850W电源测试均衡负载与ATX 3.0验证我们对参测的电源进行120%额定功率下的230V输入均衡负载测试以及纹波测试，该项测试的成绩不纳入超能指数的计算中，单纯是用来观察电源的功率余量。

预览var tableid = settableid(); document.write(''); Table().init({ title: "酷冷至尊GX II 850W电源 均衡负载测试", header: ["输出功率(W)","12V电压(V)","5V电压(V)","3.3V电压(V)","-12V电压(V)","5VSB电压(V)","115V效率(%)","PF值","230V效率(%)"], width: '91%', columnWidth: 'AUTO', //表格宽度，"AVG"平均，"AUTO"自动（默认），指定[15,16,20] id: tableid, data: [["17W (2%)","11.997 ","5.082 ","3.378 ","-12.007 ","5.137 ","80.57 ","0.564 ","78.82 "],["50","11.990 ","5.069 ","3.365 ","-11.956 ","5.121 ","85.58 ","0.936 ","87.28 "],["100","11.985 ","5.063 ","3.360 ","-11.961 ","5.116 ","89.66 ","0.988 ","91.21 "],["150","11.977 ","5.052 ","3.350 ","-11.966 ","5.111 ","90.94 ","0.994 ","92.61 "],["200","11.969 ","5.043 ","3.341 ","-11.970 ","5.104 ","91.62 ","0.996 ","93.19 "],["250","11.962 ","5.032 ","3.330 ","-11.976 ","5.097 ","91.72 ","0.997 ","93.26 "],["300","11.955 ","5.021 ","3.321 ","-11.983 ","5.091 ","91.64 ","0.997 ","93.24 "],["350","11.947 ","5.012 ","3.311 ","-11.989 ","5.085 ","91.54 ","0.998 ","93.12 "],["400","11.940 ","5.001 ","3.301 ","-11.993 ","5.080 ","91.22 ","0.998 ","92.79 "],["425","11.934 ","4.997 ","3.297 ","-11.995 ","5.076 ","91.06 ","0.998 ","92.68 "],["450","11.934 ","4.994 ","3.294 ","-11.998 ","5.074 ","90.91 ","0.998 ","92.60 "],["500","11.925 ","4.983 ","3.291 ","-12.002 ","5.068 ","90.46 ","0.998 ","92.26 "],["550","11.917 ","4.974 ","3.283 ","-12.009 ","5.063 ","90.01 ","0.998 ","91.86 "],["600","11.910 ","4.963 ","3.275 ","-12.015 ","5.055 ","89.55 ","0.998 ","91.48 "],["650","11.905 ","4.959 ","3.272 ","-12.019 ","5.051 ","89.17 ","0.998 ","91.28 "],["700","11.897 ","4.956 ","3.266 ","-12.024 ","5.045 ","88.74 ","0.998 ","90.95 "],["750","11.892 ","4.948 ","3.264 ","-12.026 ","5.043 ","88.27 ","0.998 ","90.62 "],["800","11.889 ","4.943 ","3.260 ","-12.031 ","5.037 ","87.80 ","0.998 ","90.32 "],["850","11.880 ","4.938 ","3.256 ","-12.036 ","5.034 ","87.28 ","0.998 ","89.97 "],["900","11.872 ","4.931 ","3.253 ","-12.039 ","5.029 ","-","0.998 ","89.55 "],["950","11.872 ","4.924 ","3.249 ","-12.042 ","5.025 ","-","0.998 ","89.19 "],["1000","11.867 ","4.919 ","3.245 ","-12.047 ","5.019 ","-","0.998 ","88.72 "],["1020","11.855 ","4.918 ","3.243 ","-12.047 ","5.015 ","-","0.998 ","88.44 "],["电压最大偏离(%)","-1.00 ","1.38 ","1.97 ","0.37 ","2.42 ","-","平均效率","91.71 "],["负载调整率(%)","0.92 ","2.62 ","3.30 ","-0.67 ","1.74 ","-","OPP保护","1222 "]] });酷冷至尊GX II 850W电源在超载至120%功率即输出1020W后，各路输出的电压虽少有下跌，但也仍然维持在标准范围内，转换效率的变化也属于正常范畴。而电源的OPP过功率保护点经测定是1222W，相当于是额定功率的143.8%，预留的功率空间是比较充足的。

预览var tableid = settableid(); document.write(''); Table().init({ title: "酷冷至尊GX II 850W电源", header: ["动态超载","Duty Cycle","Tc","Te","Power @ Tc","Power @ Te","测试结果"], width: '92%', columnWidth: 'MAX', //表格单元宽度，"MAX"最大内容显示，""AVG"平均，"AUTO"自动，指定[15,16,20] id: tableid, data: [["整机-200%","5%","1900μs","100μs","780","1700","通过"],["整机-180%","8%","11.5ms","1ms","762.7","1530","通过"],["整机-160%","12.50%","70ms","10ms","749.3","1360","通过"],["整机-120%","25%","300ms","100ms","785.2","1020","通过"],["12VHPWR -300%","5%","1900μs","100μs","600","1800","通过"]] });而在ATX 3.0规格验证上，目前业内比较重视的参数主要是2%轻载输出的转换效率，以及在120%、160%、180%、200%瞬时动态输出下的峰值功率表现。经测定酷冷至尊GX II 850W电源在2%轻载也就是17W输出时，在230V与115V输入下的转换效率都在60%以上，动态峰值功率的测试也全部通过，可以判定此款电源是具备ATX 3.0相关素质的。

PS：超载至120%功率是评测需要，我们并不建议玩家超载电源，如果确实需要更高的输出功率，请使用额定功率更高的产品。

电压稳定性在电压表现方面，酷冷至尊GX II 850W电源在+12V输出上的表现属于优秀水平，偏离度与调整率都不超过1%，相比之下+5V与+3.3V的表现要稍逊色一些，偏离度方面的表现尚可，调整率方面则为3%的水平，还存在可以改善的空间。

预览var title_text = "酷冷至尊GX II 850W电源 | +12V输出电压"; var subtitle_text = "www.expreview.com"; var xname = "功率W"; //X轴单位 var yname = ["电压V"]; //Y轴1单位，Y轴2单位(如果有的话) var leftside = "8%"; //左边空白 var yax = 0; //是否双Y轴 var yminmax = [11.2, 12.8]; //Y轴最小值最大值，默认全0为自动，全1为自动以最小值数据最小值 var fill = 0; //0-1表示填充透明度 var sn = 10; //坐标轴分割为多少段 var mp = 0; //是否显示最大最小值 0为不显示 var symbolsize = 6; //数据点的大小，0为不显示 var autocolor = 0; //是否自动颜色 var colors = ['#32cd32', '#FF8C00', '#32cd32']; var data_arr = [["输出功率(W)","上限","12V电压","下限"],["17","12.6","11.997","11.4"],["50","12.6","11.990 ","11.4"],["100","12.6","11.985 ","11.4"],["150","12.6","11.977 ","11.4"],["200","12.6","11.969 ","11.4"],["250","12.6","11.962 ","11.4"],["300","12.6","11.955 ","11.4"],["350","12.6","11.947 ","11.4"],["400","12.6","11.940 ","11.4"],["425","12.6","11.934 ","11.4"],["450","12.6","11.934 ","11.4"],["500","12.6","11.925 ","11.4"],["550","12.6","11.917 ","11.4"],["600","12.6","11.910 ","11.4"],["650","12.6","11.905 ","11.4"],["700","12.6","11.897 ","11.4"],["750","12.6","11.892 ","11.4"],["800","12.6","11.889 ","11.4"],["850","12.6","11.880 ","11.4"],["900","12.6","11.872 ","11.4"],["950","12.6","11.872 ","11.4"],["1000","12.6","11.867 ","11.4"],["1020","12.6","11.855 ","11.4"]]; ZHXInit(title_text, subtitle_text, xname, yname, leftside, yax, fill, sn, colors, data_arr, mp, autocolor, yminmax, symbolsize);预览var title_text = "酷冷至尊GX II 850W电源 | +5V输出电压"; var subtitle_text = "www.expreview.com"; var xname = "功率W"; //X轴单位 var yname = ["电压V"]; //Y轴1单位，Y轴2单位(如果有的话) var leftside = "8%"; //左边空白 var yax = 0; //是否双Y轴 var yminmax = [4.6, 5.4]; //Y轴最小值最大值，默认全0为自动，全1为自动以最小值数据最小值 var fill = 0; //0-1表示填充透明度 var sn = 10; //坐标轴分割为多少段 var mp = 0; //是否显示最大最小值 0为不显示 var symbolsize = 6; //数据点的大小，0为不显示 var autocolor = 0; //是否自动颜色 var colors = ['#32cd32', '#2550FE', '#32cd32']; var data_arr = [["输出功率(W)","上限","5V电压","下限"],["17","5.25","5.082","4.75"],["50","5.25","5.069 ","4.75"],["100","5.25","5.063 ","4.75"],["150","5.25","5.052 ","4.75"],["200","5.25","5.043 ","4.75"],["250","5.25","5.032 ","4.75"],["300","5.25","5.021 ","4.75"],["350","5.25","5.012 ","4.75"],["400","5.25","5.001 ","4.75"],["425","5.25","4.997 ","4.75"],["450","5.25","4.994 ","4.75"],["500","5.25","4.983 ","4.75"],["550","5.25","4.974 ","4.75"],["600","5.25","4.963 ","4.75"],["650","5.25","4.959 ","4.75"],["700","5.25","4.956 ","4.75"],["750","5.25","4.948 ","4.75"],["800","5.25","4.943 ","4.75"],["850","5.25","4.938 ","4.75"],["900","5.25","4.931 ","4.75"],["950","5.25","4.924 ","4.75"],["1000","5.25","4.919 ","4.75"],["1020","5.25","4.918 ","4.75"]]; ZHXInit(title_text, subtitle_text, xname, yname, leftside, yax, fill, sn, colors, data_arr, mp, autocolor, yminmax, symbolsize);预览var title_text = "酷冷至尊GX II 850W电源 | +3.3V输出电压"; var subtitle_text = "www.expreview.com"; var xname = "功率W"; //X轴单位 var yname = ["电压V"]; //Y轴1单位，Y轴2单位(如果有的话) var leftside = "8%"; //左边空白 var yax = 0; //是否双Y轴 var yminmax = [3.05, 3.55]; //Y轴最小值最大值，默认全0为自动，全1为自动以最小值数据最小值 var fill = 0; //0-1表示填充透明度 var sn = 10; //坐标轴分割为多少段 var mp = 0; //是否显示最大最小值 0为不显示 var symbolsize = 6; //数据点的大小，0为不显示 var autocolor = 0; //是否自动颜色 var colors = ['#32cd32', '#9B0082', '#32cd32']; var data_arr = [["输出功率(W)","上限","3.3V电压","下限"],["17","3.47","3.378","3.13"],["50","3.47","3.365 ","3.13"],["100","3.47","3.360 ","3.13"],["150","3.47","3.350 ","3.13"],["200","3.47","3.341 ","3.13"],["250","3.47","3.330 ","3.13"],["300","3.47","3.321 ","3.13"],["350","3.47","3.311 ","3.13"],["400","3.47","3.301 ","3.13"],["425","3.47","3.297 ","3.13"],["450","3.47","3.294 ","3.13"],["500","3.47","3.291 ","3.13"],["550","3.47","3.283 ","3.13"],["600","3.47","3.275 ","3.13"],["650","3.47","3.272 ","3.13"],["700","3.47","3.266 ","3.13"],["750","3.47","3.264 ","3.13"],["800","3.47","3.260 ","3.13"],["850","3.47","3.256 ","3.13"],["900","3.47","3.253 ","3.13"],["950","3.47","3.249 ","3.13"],["1000","3.47","3.245 ","3.13"],["1020","3.47","3.243 ","3.13"]]; ZHXInit(title_text, subtitle_text, xname, yname, leftside, yax, fill, sn, colors, data_arr, mp, autocolor, yminmax, symbolsize);转换效率预览var title_text = "酷冷至尊GX II 850W电源 | 转换效率"; var subtitle_text = "www.expreview.com | Higher is better"; var xname = "功率W"; //X轴单位 var yname = ["百分比%"]; //Y轴1单位，Y轴2单位(如果有的话) var leftside = "8%"; //左边空白 var yax = 0; //是否双Y轴 var yminmax = [60, 100]; //Y轴最小值最大值，默认全0为自动，全1为自动以最小值数据最小值 var fill = 0; //0-1表示填充透明度 var sn = 0; //坐标轴分割为多少段 var mp = 1; //是否显示最大最小值 0为不显示 var symbolsize = 4; //数据点的大小，0为不显示 var autocolor = 0; //是否自动颜色 var colors = ['#5793f3', '#d14a61']; var data_arr = [["功率","115V效率(%)","230V效率(%)"],["17 ","80.57 ","78.82 "],["50","85.58 ","87.28 "],["100","89.66 ","91.21 "],["150","90.94 ","92.61 "],["200","91.62 ","93.19 "],["250","91.72 ","93.26 "],["300","91.64 ","93.24 "],["350","91.54 ","93.12 "],["400","91.22 ","92.79 "],["425","91.06 ","92.68 "],["450","90.91 ","92.60 "],["500","90.46 ","92.26 "],["550","90.01 ","91.86 "],["600","89.55 ","91.48 "],["650","89.17 ","91.28 "],["700","88.74 ","90.95 "],["750","88.27 ","90.62 "],["800","87.80 ","90.32 "],["850","87.28 ","89.97 "],["900","-","89.55 "],["950","-","89.19 "],["1000","-","88.72 "],["1020","-","88.44 "]]; ZHXInit(title_text, subtitle_text, xname, yname, leftside, yax, fill, sn, colors, data_arr, mp, autocolor, yminmax, symbolsize);酷冷至尊GX II 850W是一款通过了80Plus金牌认证的电源，在230V输入的环境下，输出50W功率时转换效率超过87%，输出100W时转换效率超过91%，半载输出效率超过92%，满载输出效率超过89%，最高转换效率超过93%；在115V输入下最高转换效率超过91%，满载转换效率在87%以上，符合80Plus金牌认证要求。

输出纹波纹波和噪声是电源直流输出里夹杂的交流成分，如果用示波器观察，就会看到电压上下轻微波动，像水波纹一样，所以称之为纹波。按照英特尔ATX12V 3.0规定，+12V、+5V、+3.3V的输出纹波与噪声的Vp-p（峰-峰值）分别不得超过120mV、50mV、50mV。我们使用数字示波器在20MHz模拟带宽下按照英特尔规范给治具板测量点处并接去耦电容，对电源满载以及超载至120%功率下的输出纹波进行测量，以低频下的纹波峰峰值作为打分基准。

预览var title_text = "酷冷至尊GX II 850W电源 | 输出纹波"; // 标题文字热管 var subtitle_text = "www.expreview.com | Lower is better "; // 副标题文字 var unit_text = "mV "; //单位 var leftside = "8%"; //左边空白 var topside = 50; //每组间距 var mblur = 0.05; //模糊效果 var bgopacity = 0; //背景透明度，0为全透明 var mysort = 0; //是否排序 var myper = 1; //是否显示百分比 var mylengend = true; //是否显示图例 var toplegend = 50; //图例上端空白 var labelcolor = '#fff'; // 标签文字颜色 var legendwidth = '90%'; //图例宽度 var titlecolor = '#000'; //标题文字颜色 var barheight = 32; //柱高度,当为7倍数时，不显示刻度线 var bargap = 3; //柱间距,相当于百分值，即2% var xaxismax = null; //指定X轴最大值，null时为自动 var autocolor = 0; //是否自动判断颜色，0为否，1根据品牌生成颜色 ，如果 >1 则为AMD NV Intel 标准色, var mycolor = ['#953f61', '#72355f', '#d77169']; //自动生成随机颜色 也可ANIColor("NVIDIA",3)可以生成三种NV绿，可替换成AMD Intel //var mycolor = ANIColor('AMD',4); //这样自动生成4种AMD红色，其它如NVIDIA、Intel同理 //var mycolor=['#953f61', '#72355f', '#d77169']; //自定义颜色 AMD红 '#9F1417', NV绿 '#82B41B', Intel蓝 '#0075C5', //var mycolor = ['#0dcc47', '#969696', '#6f7b80','5A94DF']; var data_arr = [{ "type": "+12V纹波", "100%满载": "38", "120%超载": "46", "上限": "120" }, { "type": "+5V纹波", "100%满载": "10", "120%超载": "16", "上限": "50" }, { "type": "+3.3V纹波", "100%满载": "12", "120%超载": "19", "上限": "50" },]; TDInit(title_text, subtitle_text, unit_text, leftside, topside, mblur, bgopacity, mysort, myper, mylengend, toplegend, labelcolor, legendwidth, titlecolor, barheight, bargap, mycolor, data_arr, autocolor, xaxismax);酷冷至尊GX II 850W电源在100%满载时的+12V、+5V、+3.3V低频纹波为38mV、10mV和12mV，超载至120%也就是1020W后，电源输出纹波提升至46mV、16mV和19mV，变化幅度处于合理范围，纹波抑制还是比较优秀的。

交叉负载交叉负载测试项目我们按照Intel ATX12V 3.0和SSI EPS12V 2.92电源设计指导的要求，制定出850W电源交叉负载图表。

值得注意的是，我们并非原封照搬设计规范，而只选择其中比较有实际意义的4个测试点，分别是交叉负载框里的左下、左上、右上和右下角四个点。

这四个点的意义分别为：

　　左下角（A点）：整机最小负载；　　左上角（B点）：辅路最大负载、12V最小负载，例如多个机械硬盘同时启动的情况；　　右上角（C点）：辅路最大负载、整机满载；　　右下角（D点）：12V最大负载、辅路最小负载，例如使用单个固态硬盘运行3D游戏的情况；

测试点的X坐标表示总的+12V的输出功率，Y坐标表示+5V和+3.3V的输出功率之和。

交叉负载的测试与前面的均匀负载测试的评判标准一致，电压偏离额定值越少越好，各路偏离率允许的值都为±5%。

预览var title_text = "酷冷至尊GX II 850W电源 | 交叉负载设置 "; var subtitle_text = "www.expreview.com ｜850W | Unit: W"; var data = [ [6, 4.15],[72.7, 120],[726.6, 120],[822.6, 24]]; POLInit(title_text, subtitle_text, data);预览var title_text = "酷冷至尊GX II 850W电源 | 交叉负载测试 | 电压偏离度"; // 标题文字 var subtitle_text = "www.expreview.com ｜ Lower is better"; // 副标题文字 var unit_text = "%"; //单位 var leftside = "8%"; //左边空白 var move = 0; //是否动态 1表示动态 var mblur = 0.1; //是否模糊，效果 0-1 //var mycolor = ['#cc0000', '#aaa', '#bbb', '#ccc', '#ddd', '#eee']; //自定义颜色 //var mycolor = ['#cc0000', '#953f61', '#72355f', '#ccc', '#d77169']; //自定义颜色 var mycolor = ['#32cd32','#FF8C00','#2550FE','#9B0082','#32cd32']; //自定义颜色 var data_arr = [{"type":"A","上限":"5","12V":"-0.03 ","5V":"1.27 ","3.3V":"1.88 ","下限":"-"},{"type":"B","上限":"-","12V":"-0.33 ","5V":"-0.26 ","3.3V":"0.41 ","下限":"-"},{"type":"C","上限":"-","12V":"-0.98 ","5V":"-1.01 ","3.3V":"-0.54 ","下限":"-"},{"type":"D","上限":"-","12V":"-0.90 ","5V":"-0.50 ","3.3V":"0.20 ","下限":"-5"}]; ZHDInit(title_text, subtitle_text, unit_text, leftside, move, mblur, mycolor, data_arr);酷冷至尊GX II 850W电源在不同的负载环境中，三路输出的电压变化虽然各有不同，但是从幅度来说都是比较小的，不会对使用体验造成影响。

保持时间掉电保持时间（Hold-up Time）是指电源掉电之后电压输出值跌出范围允许的5%的时间，我们测量的是+12V、+5V和Power-OK（Power-Good）信号的保持时间。

SSI EPS12V 2.92服务器电源设计指导中对输出电压保持时间的要求是电源在75%的负载下保持时间应该大于18ms，而Power-OK信号的保持时间要求是大于17ms。

掉电保持时间如此受关注，是因为其很大程度上关系到硬件的寿命，Power-OK保持17ms意味着面临17ms以内的掉电情况时电脑能持续运行而不出现关机、重启的状况，而各路电压保持18ms或者更长的时间，是为了在掉电发生时各个硬件能够做出应急处理，比如机械硬盘的磁头归位 、SSD的掉电保护。

酷冷至尊GX II 850W电源的保持时间是在75%负载（DC输出637.5W）的情况下测得。

预览var title_text = "酷冷至尊GX II 850W | 保持时间"; // 标题文字热管 var subtitle_text = "www.expreview.com | Higher is better "; // 副标题文字 var unit_text = "毫秒ms "; //单位 var leftside = "8%"; //左边空白 var topside = 50; //每组间距 var mblur = 0.05; //模糊效果 var bgopacity = 0; //背景透明度，0为全透明 var mysort = 0; //是否排序 var myper = 1; //是否显示百分比 var mylengend = true; //是否显示图例 var toplegend = 50; //图例上端空白 var labelcolor = '#fff'; // 标签文字颜色 var legendwidth = '90%'; //图例宽度 var titlecolor = '#222'; //标题文字颜色 var barheight = 32; //柱高度,当为7倍数时，不显示刻度线 var bargap = 3; //柱间距,相当于百分值，即2% var xaxismax = 40; //指定X轴最大值，null时为自动 var autocolor = 0; //是否自动判断颜色，0为否，1根据品牌生成颜色 ，如果 >1 则为AMD NV Intel 标准色, var mycolor = ['#953f61', '#72355f', '#d77169']; //自动生成随机颜色 也可ANIColor("NVIDIA",3)可以生成三种NV绿，可替换成AMD Intel //var mycolor = ANIColor('AMD',4); //这样自动生成4种AMD红色，其它如NVIDIA、Intel同理 //var mycolor=['#953f61', '#72355f', '#d77169']; //自定义颜色 AMD红 '#9F1417', NV绿 '#82B41B', Intel蓝 '#0075C5', //var mycolor = ['#0dcc47', '#969696', '#6f7b80','5A94DF']; var data_arr = [{ "type": "12V", "实际": "28.9", "下限": "18" }, { "type": "5V", "实际": "30.1", "下限": "18" }, { "type": "PG", "实际": "24.2", "下限": "17" },]; TDInit(title_text, subtitle_text, unit_text, leftside, topside, mblur, bgopacity, mysort, myper, mylengend, toplegend, labelcolor, legendwidth, titlecolor, barheight, bargap, mycolor, data_arr, autocolor, xaxismax);对于+12V和+5V，合格的标准是保持时间等于或者大于18ms，Power-OK（或者称PG，Power-Good）时间应该等于或者大于17ms。酷冷至尊GX II 850W电源的+12V保持时间为28.9ms，+5V为30.1ms，Power-OK为24.2ms，三项成绩全部达标且留有充足余量。

散热风扇转速预览var title_text = "酷冷至尊GX II 850W电源 | 风扇转速"; var subtitle_text = "www.expreview.com"; var xname = "功率W"; //X轴单位 var yname = ["转速RPM"]; //Y轴1单位，Y轴2单位(如果有的话) var leftside = "8%"; //左边空白 var yax = 0; //是否双Y轴 var yminmax = [0, 2000]; //Y轴最小值最大值，默认全0为自动，全1为自动以最小值数据最小值 var fill = 0; //0-1表示填充透明度 var sn = 10; //坐标轴分割为多少段 var mp = 1; //是否显示最大最小值 0为不显示 var symbolsize = 6; //数据点的大小，0为不显示 var autocolor = 0; //是否自动颜色 var colors = ['#32cd32', '#FF8C00']; var data_arr = [["输出功率(W)","AUTO"],["50","0"],["100","0"],["150","0"],["200","0"],["250","0"],["300","0"],["350","844 "],["400","879 "],["450","931 "],["500","974 "],["550","1022 "],["600","1081 "],["650","1124 "],["700","1184 "],["750","1294"],["800","1578 "],["850","1837 "]]; ZHXInit(title_text, subtitle_text, xname, yname, leftside, yax, fill, sn, colors, data_arr, mp, autocolor, yminmax, symbolsize);电源标配的120mm HDB液态动压轴承风扇可在40%以下负载中实现智能启停的功能，标称最高2500RPM的转速，但是在实际使用中，满载的情况下也能控制在1800RPM左右，噪音与散热效能之间还是有良好平衡的。

酷冷至尊GX II 850W电源得分及点评按照我们目前的评分标准，酷冷至尊GX II 850W电源的超能指数为84.71分，属于优秀电源的水平。这是一款适合主流级玩家采用的“万金油”级别产品，目前市场售价为899元，可享受10年质保服务。

预览var tableid = settableid(); document.write(''); Table().init({ title: "酷冷至尊GX II 850W电源评分", header: ["项目","电压稳定(30分)","转换效率(35分)","满载纹波(15分)","交叉负载(15分)","保持时间(5分)","超能指数"], width: '91%', id: tableid, data: [["得分","23.76 ","31.67 ","12.99 ","11.60 ","4.70 ","84.71 "]]});诚然酷冷至尊GX II 850W电源先比采用顶级设计的850W电源还存在着一些理论性能上的差距，但是在实际使用中并不会带来的明显的使用体验差距，反而是其90度弯头的12VHPWR接口以及针对散热进行的内部优化更能给玩家带来使用上的便利，而且对于大部分的ATX平台来说160mm的长度其实也不会带来安装上的困难，可以说酷冷至尊对这款电源的定位与设计都是及非常精确的。

预览PowerInit("酷冷至尊 GX II 850W");（对于额定功率大于等于1000W的电源，其天梯榜分数会在超能指数的基础上加1分）当然站在我们的角度来看，我们也确实希望这款电源能够得到进一步的性能提升，主要是提升+5V与+3.3V的性能表现，补足短板之后的产品将具备更强的竞争力，更值得玩家选择。

√ 优点：

- 80Plus金牌认证 - 10年质保- +12V输出表现优秀- 输出纹波较低- 符合ATX 3.0规格要求

X 缺点：

- +5V与+3.3V电压调整率略高