Sapphire的这款Atomic HD 4870 X2显卡具备2*800个流处理器，采用了2*1GB GDDR5显存颗粒，比公版频率要高，为800/1000MHz（core/memory）。在散热方面采用了Asetek生产的液冷散热系统，全封闭的液冷散热系统完全覆盖了2个GPU核心、所有显存颗粒以及供电模块，为显卡带来极致的散热效果。

　　Atomic HD 4870 X2将会在12月18日发售，价格为649美元，人民币约为4449元。

　　目前该水冷还没有正式上市，Danger Den也没有给出指导价格，不过既然他们的3870 X2水冷头价格能够卖150美元，相信这款HD 4870 X2专用水冷头也不会便宜到哪里去。

Danger Den

　　在继HD 4870 X2发布之后，Asetek立刻发布消息，称将发布基于他们LCLC技术的HD 4870 X2水冷。

　　LCLC是Asetek低价免维护水冷系统的简称，之前他们也已经推出了支持CPU，G80，HD4870等等的LCLC产品。不过在这次的发布时Asetek并没有附带任何的产品图片，或者这就是所谓的纸面发布吧！

为HD4870设计的LCLC

官方发布页面

1.912 billion processors (956 million transistors per GPU on 55nm fabrication process)PCI Express® 2.0 x16 bus interface512-bit GDDR3 memory interface (ATI Radeon™ HD 4850 X2)512-bit GDDR5 memory interface (ATI Radeon™ HD 4870 X2)Microsoft® DirectX® 10.1 support  Shader Model 4.1 32-bit floating point texture filtering Indexed cube map arrays Independent blend modes per render target Pixel coverage sample masking Read/write multi-sample surfaces with shaders Gather4 texture fetchingUnified Superscalar Shader Architecture  1600 stream processing units Dynamic load balancing and resource allocation for vertex, geometry, and pixel shaders Common instruction set and texture unit access supported for all types of shaders Dedicated branch execution units and texture address processors 128-bit floating point precision for all operations Command processor for reduced CPU overhead Shader instruction and constant caches Up to 320 texture fetches per clock cycle Up to 128 textures per pixel Fully associative multi-level texture cache design DXTC and 3Dc+ texture compression High resolution texture support (up to 8192 x 8192) Fully associative texture Z/stencil cache designs Double-sided hierarchical Z/stencil buffer Early Z test and Fast Z Clear Lossless Z & stencil compression (up to 128:1) Lossless color compression (up to 8:1) 8 render targets (MRTs) with anti-aliasing support Physics processing supportDynamic Geometry Acceleration  High performance vertex cache Programmable tessellation unit Accelerated geometry shader path for geometry amplification Memory read/write cache for superior stream output performanceAnti-Aliasing Features  Multi-sample anti-aliasing (2, 4 or 8 samples per pixel) Up to 24x Custom Filter Anti-Aliasing (CFAA) for superior quality Adaptive super-sampling and multi-sampling Gamma correct Super AA (ATI CrossFireX™ configurations only) All anti-aliasing features compatible with HDR renderingTexture Filtering Features  2x/4x/8x/16x high quality adaptive anisotropic filtering modes (up to 128 taps per pixel) 128-bit floating point HDR texture filtering sRGB filtering (gamma/degamma) Percentage Closer Filtering (PCF) Depth & stencil texture (DST) format support Shared exponent HDR (RGBE 9:9:9:5) texture format support 评测：

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　　可惜的是，在中国国内我们或者不能在发布当天直接看到该卡上市。据消息人士指出，在国内HD 4870 X2的备货量仍然不足够，可能需要延后几天才能够正式推出。和GTX 280在同一条价格线上的HD 4870 X2性价比究竟如何？我们拭目以待。

　　在前期的测试里，TGDaily宣称R700的交火成绩非常不俗，或者将能够和三张GTX 280的三卡SLI相匹敌，在当时的测试里，他们透露显卡的频率为778MHz/980MHz(核心/显存)。

[图片来源：Chiphell]