虽然AMD长期以来作为“电老虎”，并且有外媒报道AMD Radeon Vega Frontier显卡功耗爆表作为预防针，我们还是不太敢相信，AMD打磨多时的Vega架构显卡，居然在功耗控制上依然没有长足的进步。

我们测试的是AMD Radeon Vega Frontier风冷版，工作在Radeon Pro Mode（AMD专业显卡模式），3DMark FireStrike下运行频率在1440-1528MHz之间，达不到标称峰值1600MHz。待机状态是由功耗测试软件引导显卡进入待机模式，满载状态下是使用3DMark FireStrike压力测试，这是经过我们长期测试下来得出的结论，3DMark FireStrike压力测试最能体现出显卡的功耗表现，而且场景易于重复。至于测试工具，只要熟悉超能网显卡评测的网友们都知道，我们自行研发出一套精确度非常高的显卡功耗测试仪器，可以分别单独测试出显卡的PCI-E功耗、每一个外接供电接口功耗，以便查看是否超标取电问题。

var tableid = Math.floor(Math.pow((Math.random()+Math.random())*111,3)); document.write(''); var myChart = echarts.init(document.getElementById(tableid)); var title_text = "AMD Radeon Vega Frontier功耗测试"; // 标题文字 var subtitle_text = "www.expreview.com ｜3DMark Fire Strike | Lower is better"; // 副标题文字 var data_arr =[ ["20.4 ","257.9 "], ["20.6 ","303.0 "], ["20.2 ","247.4 "], ["20.2 ","295.1 "], ["20.6 ","304.8 "], ["20.4 ","337.9 "], ["20.4 ","331.9 "], ["20.2 ","410.0 "], ["20.6 ","287.9 "], ["20.4 ","278.3 "], ["20.3 ","330.5 "], ["20.3 ","341.2 "], ["20.5 ","285.2 "], ["20.5 ","331.0 "], ["20.7 ","322.3 "], ["20.3 ","326.0 "], ["20.3 ","256.0 "], ["20.4 ","265.1 "], ["20.1 ","320.9 "], ["20.2 ","307.9 "], ["20.0 ","323.9 "], ["20.6 ","267.6 "], ["20.3 ","303.8 "], ["20.6 ","282.6 "], ["20.5 ","301.0 "], ["20.2 ","342.4 "], ["20.2 ","317.8 "], ["20.3 ","294.5 "], ["18.3 ","344.7 "], ["18.6 ","279.0 "], ["20.3 ","299.8 "], ["20.4 ","257.9 "], ["20.2 ","316.9 "], ["20.3 ","313.1 "], ["20.3 ","314.8 "], ["20.6 ","296.1 "], ["20.5 ","334.6 "], ["20.6 ","349.4 "], ["20.3 ","350.9 "], ["20.5 ","317.4 "], ["20.6 ","307.4 "], ["20.6 ","161.9 "], ["20.3 ","212.9 "], ["20.7 ","207.5 "], ["20.5 ","306.0 "], ["20.4 ","327.8 "], ["20.5 ","315.2 "], ["20.6 ","333.0 "], ["20.6 ","250.8 "], ["20.4 ","258.1 "], ["20.4 ","265.9 "], ["20.4 ","252.5 "], ["20.5 ","212.7 "], ["20.1 ","182.0 "], ["20.3 ","228.4 "], ["20.2 ","272.7 "], ["20.2 ","290.8 "], ["20.4 ","236.3 "], ["20.6 ","329.2 "], ["20.3 ","313.1 "], ["21.0 ","337.6 "], ["20.4 ","259.7 "], ["20.4 ","197.0 "], ["20.3 ","203.5 "], ["20.4 ","210.0 "], ["20.4 ","251.2 "], ["20.7 ","280.8 "], ["20.3 ","236.3 "], ["20.4 ","295.4 "], ["20.2 ","339.5 "], ["20.7 ","314.7 "], ["20.5 ","256.0 "], ["20.4 ","294.7 "], ["20.4 ","213.1 "], ["20.6 ","175.9 "], ["20.6 ","232.5 "], ["20.4 ","262.8 "], ["20.4 ","357.6 "], ["20.3 ","337.0 "], ["20.4 ","276.0 "], ["20.5 ","337.0 "], ["20.3 ","239.6 "], ["20.7 ","270.7 "], ["20.9 ","229.2 "], ["20.1 ","178.0 "], ["20.4 ","223.0 "], ["20.4 ","269.6 "], ["20.7 ","250.3 "], ["20.3 ","266.3 "], ["20.4 ","238.3 "], ["20.2 ","313.6 "], ["20.7 ","334.7 "], ["20.6 ","284.6 "], ["20.4 ","331.3 "], ["20.5 ","198.4 "], ["20.4 ","155.2 "], ["20.3 ","189.3 "], ["20.6 ","219.6 "], ["20.3 ","258.6 "], ["20.8 ","290.0 "], ["20.5 ","238.2 "], ["20.5 ","311.2 "], ["20.4 ","327.6 "], ["20.6 ","268.4 "], ["20.3 ","328.9 "], ["21.0 ","242.4 "], ["20.5 ","230.2 "], ["20.3 ","201.6 "], ["20.6 ","207.4 "], ["20.6 ","250.5 "], ["20.4 ","339.0 "], ["20.2 ","347.5 "], ["20.6 ","257.5 "], ["20.2 ","213.2 "], ["20.8 ","267.5 "], ["20.6 ","212.2 "], ["20.6 ","230.8 "], ["20.5 ","178.1 "], ["20.6 ","198.4 "], ["20.4 ","329.6 "], ["20.5 ","281.5 "], ["20.5 ","234.0 "], ["20.5 ","218.7 "], ["20.4 ","317.6 "], ["20.6 ","322.9 "], ["20.2 ","286.2 "], ["20.7 ","267.0 "], ["20.5 ","232.8 "], ["20.7 ","194.8 "], ["20.4 ","216.2 "], ["20.8 ","250.4 "], ["20.3 ","345.0 "], ["20.5 ","268.8 "], ["20.6 ","198.4 "], ["20.6 ","322.2 "], ["18.6 ","274.7 "], ["18.5 ","320.3 "], ["20.4 ","292.6 "], ["20.4 ","199.5 "], ["20.8 ","206.9 "], ["20.7 ","194.8 "], ["20.4 ","225.1 "], ["20.5 ","276.2 "], ["20.5 ","331.3 "], ["20.4 ","284.1 "], ["20.5 ","196.7 "], ["20.5 ","259.2 "], ["20.4 ","282.0 "], ["20.5 ","262.7 "], ["20.5 ","198.4 "], ["20.8 ","208.8 "], ["20.7 ","216.8 "], ["20.2 ","268.9 "], ["20.4 ","275.3 "], ["20.5 ","226.7 "], ["20.6 ","222.5 "], ["20.7 ","312.6 "], ["20.6 ","268.7 "], ["20.6 ","262.2 "], ["20.7 ","246.1 "], ["20.6 ","185.0 "], ["20.8 ","227.0 "], ["20.7 ","217.8 "], ["20.6 ","256.0 "], ["20.4 ","321.5 "], ["20.3 ","193.2 "], ["20.4 ","273.7 "], ["20.5 ","302.7 "], ["20.7 ","356.4 "], ["20.5 ","265.8 "], ["20.7 ","336.6 "], ["20.3 ","214.1 "], ["20.8 ","158.5 "], ["20.5 ","197.5 "], ["21.1 ","206.6 "], ["20.5 ","281.5 "], ["20.7 ","307.2 "], ["20.3 ","287.0 "], ["20.5 ","272.2 "], ["20.6 ","258.0 "], ] var x_arr = arr_init(data_arr).iarr;var idle_arr = arr_init(data_arr).farr;var power_arr = arr_init(data_arr).sarr; var option={tooltip:{trigger:"axis"},legend:{data:["待机功耗","满载功耗"],right:35,y:65},toolbox:{show:true,feature:{dataView:{show:true,readOnly:true},magicType:{show:false,type:["line","bar","stack","tiled"]},restore:{show:true},saveAsImage:{show:true},dataZoom:{show:true}},y:"center",orient:"vertical",itemSize:12},calculable:true,xAxis:[{type:"category",data:x_arr,nameLocation:"end",name:"s",splitLine:{lineStyle:{type:"dashed",width:1},show:true},min:1,max:data_arr.length+1}],yAxis:[{type:"value",max:getmax(),interval:getmax()/5,splitLine:{lineStyle:{type:"dashed",width:1},show:true},axisLabel:{formatter:'{value}W '}}],series:[{name:"待机功耗",type:"line",data:idle_arr,smooth:true,itemStyle:{normal:{areaStyle:{type:"default"},color:"rgb(255, 127, 0)"}},symbolSize:0},{type:"line",itemStyle:{normal:{areaStyle:{type:"default"},color:"rgb(86, 170, 255)"}},markPoint:{data:[{type:'max',name:'最大值'},{type:'min',name:'最小值'}],symbolSize:[90,40],itemStyle:{normal:{opacity:0.9}}},name:"满载功耗",data:power_arr,symbolSize:0}],title:{text:title_text,subtext:subtitle_text,y:20},grid:{x:60,x2:40,y:95,y2:40}}; function arr_init(array) { var iarr = []; var farr = []; var sarr = []; for (var i = 0; i < array.length; i++) { iarr.push(i); farr.push(array[i][0]); sarr.push(array[i][1]); } return { iarr, farr, sarr };} function getmax() { var max = Math.max.apply(null, power_arr); var axis = Math.ceil(max * 0.1) * 10; axis = (axis + Math.ceil(max * 0.1 + 1) * 10) / 2; return axis;} myChart.setOption(option);待机功耗上，12相豪华供电的AMD Radeon Vega Frontier显卡有20W表现丝毫不出奇，毕竟更多的电子元器件在待机时就得浪费更多电。

满载功耗上，这一看到功耗曲线波动非常大，在前期维持一个比较高的平均功耗，峰值功耗已经飙到了410W。但是40秒以后，功耗就开始变得十分波动，在155-330W之间不停跳动，总体平均功耗也有269W。这个问题有点奇怪，由于GPU-Z 2.2.0采集不到Vega显卡温度数据，但推测前期较高的平均功耗是前期能维持一个较高的核心运行频率，之后由于功耗或者温度问题触发了BIOS的强制降频，功耗才会如此波动。

由于我们看到AMD Radeon Vega Frontier显卡时不时功耗就能触及330W水平线，就调出PCI-E、双8Pin外接供电取电数据。定睛一看，居然双8Pin有小幅度超标取电问题，根据电源供电规范，8Pin接口最大供电是150W（并不是说电源线不能超过150W，因为18AWG线最大供电瓦数是12V/16A/192W）。

var tableid = Math.floor(Math.pow((Math.random()+Math.random())*111,3)); document.write(''); var myChart = echarts.init(document.getElementById(tableid)); var title_text = "AMD Radeon Vega Frontier PCI-E、双8Pin取电情况"; var subtitle_text = "www.expreview.com"; var xname="时间s"; //X轴单位 var yname=["功耗W","电压V"]; //Y轴1单位，Y轴2单位(如果有的话) var leftside = 60; //左边距离 var yax = 0; //是否双Y轴 var fill = 0; //0-1表示填充透明度 var sn =1; //坐标轴分割为多少段 var colors = ['#5793f3', '#d14a61', '#675bba', '#675bba']; var data_arr = [ ["0","PCIE 12V+3.3V","12V EXT1","12V EXT2"], ["1","24.9 ","110.6 ","122.3 "], ["2","30.3 ","140.6 ","132.0 "], ["3","20.9 ","111.4 ","115.0 "], ["4","25.5 ","123.7 ","145.8 "], ["5","21.2 ","147.6 ","136.0 "], ["6","20.2 ","152.6 ","165.1 "], ["7","24.6 ","142.4 ","164.9 "], ["8","27.8 ","188.0 ","194.3 "], ["9","27.4 ","131.0 ","129.6 "], ["10","21.3 ","126.9 ","130.2 "], ["11","25.8 ","147.8 ","156.9 "], ["12","23.9 ","153.4 ","163.9 "], ["13","20.6 ","129.2 ","135.4 "], ["14","21.6 ","149.9 ","159.5 "], ["15","19.2 ","154.6 ","148.6 "], ["16","22.8 ","158.9 ","144.3 "], ["17","20.6 ","112.4 ","122.9 "], ["18","22.4 ","116.9 ","125.9 "], ["19","26.1 ","139.8 ","155.0 "], ["20","23.0 ","131.1 ","153.8 "], ["21","27.5 ","151.9 ","144.5 "], ["22","22.9 ","122.9 ","121.8 "], ["23","26.4 ","135.9 ","141.5 "], ["24","27.1 ","120.9 ","134.5 "], ["25","27.9 ","132.4 ","140.8 "], ["26","25.3 ","156.4 ","160.6 "], ["27","20.6 ","146.3 ","150.9 "], ["28","29.8 ","129.6 ","135.2 "], ["29","27.2 ","157.1 ","160.5 "], ["30","22.5 ","133.0 ","123.5 "], ["31","23.7 ","125.1 ","151.0 "], ["32","30.1 ","114.1 ","113.6 "], ["33","27.5 ","133.7 ","155.7 "], ["34","27.3 ","138.8 ","146.9 "], ["35","23.1 ","146.3 ","145.4 "], ["36","22.3 ","145.0 ","128.7 "], ["37","21.1 ","148.1 ","165.4 "], ["38","22.3 ","157.5 ","169.6 "], ["39","23.6 ","157.8 ","169.4 "], ["40","21.6 ","148.1 ","147.7 "], ["41","23.4 ","129.4 ","154.6 "], ["42","20.1 ","68.6 ","73.2 "], ["43","30.3 ","96.3 ","86.3 "], ["44","21.4 ","89.2 ","96.9 "], ["45","23.5 ","142.2 ","140.3 "], ["46","23.7 ","144.1 ","160.1 "], ["47","21.7 ","144.8 ","148.8 "], ["48","25.7 ","153.9 ","153.4 "], ["49","20.0 ","105.2 ","125.6 "], ["50","26.6 ","111.0 ","120.5 "], ["51","28.0 ","121.4 ","116.5 "], ["52","21.4 ","118.2 ","113.0 "], ["53","22.1 ","89.8 ","100.8 "], ["54","22.1 ","77.7 ","82.2 "], ["55","25.4 ","100.3 ","102.6 "], ["56","22.6 ","123.6 ","126.6 "], ["57","23.0 ","134.6 ","133.2 "], ["58","27.8 ","98.3 ","110.2 "], ["59","29.7 ","163.8 ","135.6 "], ["60","26.7 ","131.9 ","154.5 "], ["61","26.3 ","150.8 ","160.5 "], ["62","27.1 ","111.1 ","121.5 "], ["63","28.8 ","73.8 ","94.4 "], ["64","22.5 ","89.3 ","91.6 "], ["65","21.5 ","89.9 ","98.6 "], ["66","29.4 ","104.1 ","117.7 "], ["67","24.9 ","116.4 ","139.5 "], ["68","22.3 ","102.0 ","112.0 "], ["69","23.0 ","125.9 ","146.4 "], ["70","23.2 ","149.4 ","166.9 "], ["71","27.0 ","138.6 ","149.1 "], ["72","28.4 ","123.0 ","104.6 "], ["73","21.5 ","139.8 ","133.4 "], ["74","26.4 ","89.7 ","97.0 "], ["75","24.7 ","70.7 ","80.5 "], ["76","25.8 ","95.9 ","110.8 "], ["77","23.2 ","127.9 ","111.7 "], ["78","25.5 ","159.6 ","172.4 "], ["79","25.1 ","158.6 ","153.3 "], ["80","21.8 ","123.3 ","130.9 "], ["81","23.4 ","144.3 ","169.3 "], ["82","21.8 ","105.3 ","112.5 "], ["83","24.0 ","122.8 ","124.0 "], ["84","23.9 ","100.8 ","104.5 "], ["85","22.1 ","74.8 ","81.1 "], ["86","22.2 ","104.4 ","96.5 "], ["87","27.6 ","117.6 ","124.3 "], ["88","27.1 ","106.9 ","116.2 "], ["89","22.4 ","118.6 ","125.3 "], ["90","27.4 ","102.2 ","108.8 "], ["91","21.5 ","137.2 ","154.9 "], ["92","29.1 ","159.0 ","146.5 "], ["93","29.2 ","121.6 ","133.8 "], ["94","28.5 ","157.4 ","145.3 "], ["95","21.4 ","88.3 ","88.7 "], ["96","20.7 ","63.6 ","70.9 "], ["97","27.0 ","82.9 ","79.3 "], ["98","21.6 ","96.2 ","101.9 "], ["99","30.3 ","113.9 ","114.4 "], ["100","27.6 ","135.8 ","126.7 "], ["101","22.5 ","106.5 ","109.1 "], ["102","25.6 ","135.5 ","150.2 "], ["103","22.3 ","155.7 ","149.6 "], ["104","21.5 ","115.8 ","131.1 "], ["105","20.6 ","155.5 ","152.7 "], ["106","23.9 ","101.4 ","117.1 "], ["107","29.5 ","94.7 ","105.9 "], ["108","27.7 ","79.9 ","94.0 "], ["109","21.8 ","90.5 ","95.2 "], ["110","21.4 ","111.8 ","117.2 "], ["111","26.9 ","151.9 ","160.2 "], ["112","27.7 ","151.1 ","168.7 "], ["113","24.1 ","115.8 ","117.6 "], ["114","26.4 ","93.3 ","93.5 "], ["115","26.9 ","116.0 ","124.6 "], ["116","21.4 ","89.3 ","101.5 "], ["117","26.2 ","100.3 ","104.3 "], ["118","21.8 ","70.8 ","85.5 "], ["119","21.5 ","87.8 ","89.0 "], ["120","25.6 ","144.8 ","159.2 "], ["121","23.1 ","121.9 ","136.5 "], ["122","27.0 ","97.6 ","109.3 "], ["123","29.8 ","98.4 ","90.5 "], ["124","27.1 ","134.6 ","155.8 "], ["125","21.2 ","150.8 ","150.9 "], ["126","20.4 ","138.3 ","127.6 "], ["127","23.9 ","115.1 ","128.0 "], ["128","26.5 ","100.6 ","105.6 "], ["129","21.3 ","86.7 ","86.9 "], ["130","22.9 ","89.5 ","103.8 "], ["131","21.8 ","115.8 ","112.9 "], ["132","24.9 ","163.4 ","156.6 "], ["133","27.6 ","117.7 ","123.5 "], ["134","22.1 ","89.4 ","86.9 "], ["135","21.8 ","152.8 ","147.6 "], ["136","26.2 ","121.7 ","126.9 "], ["137","22.9 ","153.5 ","143.9 "], ["138","28.6 ","123.5 ","140.5 "], ["139","19.9 ","81.5 ","98.2 "], ["140","28.8 ","82.8 ","95.3 "], ["141","22.4 ","84.2 ","88.1 "], ["142","26.2 ","91.4 ","107.6 "], ["143","22.9 ","126.4 ","126.9 "], ["144","27.0 ","154.3 ","150.1 "], ["145","20.6 ","127.5 ","136.0 "], ["146","23.6 ","67.1 ","106.0 "], ["147","26.5 ","109.5 ","123.3 "], ["148","23.8 ","124.2 ","134.0 "], ["149","23.4 ","115.7 ","123.6 "], ["150","21.8 ","88.7 ","87.9 "], ["151","27.6 ","89.1 ","92.0 "], ["152","25.1 ","92.0 ","99.8 "], ["153","28.5 ","108.8 ","131.7 "], ["154","23.0 ","124.7 ","127.7 "], ["155","22.0 ","98.1 ","106.5 "], ["156","22.7 ","94.8 ","105.0 "], ["157","22.7 ","147.7 ","142.2 "], ["158","21.2 ","116.5 ","131.0 "], ["159","20.9 ","111.4 ","129.9 "], ["160","21.1 ","106.3 ","118.7 "], ["161","21.8 ","80.4 ","82.8 "], ["162","24.0 ","102.1 ","100.9 "], ["163","30.1 ","98.3 ","89.3 "], ["164","27.9 ","106.8 ","121.3 "], ["165","22.3 ","144.3 ","154.9 "], ["166","29.0 ","75.4 ","88.8 "], ["167","23.7 ","119.9 ","130.2 "], ["168","21.7 ","145.1 ","135.9 "], ["169","22.2 ","167.8 ","166.5 "], ["170","26.9 ","116.7 ","122.2 "], ["171","22.1 ","161.8 ","152.6 "], ["172","26.1 ","88.2 ","99.7 "], ["173","20.1 ","66.2 ","72.2 "], ["174","28.3 ","82.1 ","87.1 "], ["175","21.4 ","86.9 ","98.2 "], ["176","20.8 ","131.0 ","129.7 "], ["177","21.6 ","141.2 ","144.4 "], ["178","20.9 ","117.3 ","148.8 "], ["179","20.6 ","125.4 ","126.3 "], ["180","28.9 ","117.8 ","111.4 "] ] var zoom= data_arr.length>50? true:false;var l_arr = data_arr[0];l_arr.splice(0, 1);var x_arr = arr_init(data_arr, 0).iarr; var option={color:colors,tooltip:{trigger:'axis',axisPointer:{type:'cross',}},legend:{data:l_arr,itemGap:8,right:myChart.getWidth()

其实AMD Radeon Vega Frontier显卡居然跑不满预估的300W功耗，着实令人诧异，有利于怀疑偏向游戏的3DMark测试不能压榨出AMD Radeon Vega Frontier显卡潜力，另外AMD Radeon Vega Frontier显卡频率也没有跑满Peak模式的1600MHz。后续我们会在游戏上继续测试AMD Radeon Vega Frontier显卡功耗问题，有疑问的小伙伴可以联系小超哥微信9501417，提出宝贵的测试意见。