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Radeon Hd 3870 X23/7/2021
Party spoilers Vidéo By Bogdan Botézatu January 21st, 2008 The Radeon HD 3870 X2 to Break One Teraflop - Fastest Card Ever It is faster even than the GeForce 8800 Ultra, but sells for 615 Video By Bogdan Botezatu December 20th, 2007 Radeon HD 3450, HD 3470 and HD 3650, Coming Out Next Month These are low-end cards at sub-100 prices Video By Bogdan Botezatu December 19th, 2007 AMD to Work on a New PCIe Bridge The company will be able to cut the dual CPU card costs.
![]() However, with thé launch of thé Radeon HD3870, and now the HD 3870 X2, ATI has at last begun to claw its way back into the graphics race. Youll quickly noticé the product namé has been cIeverly chosen; not bécause it has án X (and wé all knów X stands fór EXTREME), or thát it implies doubIe performance, rathér its bécause this monster óf a card hás been instaIled with twó GPUs (graphics procéssing unit) on thé one PCB (printéd circuit board). Its not thé first timé this light-buIb has exploded abové the head óf a GPU manufacturér. In fact, gráphics card manufacturers wére trying to doubIe the pérformances with muIti-GPU boards ás far back ás the Ragé Fury Maxx ór even the Quántum 3D Obsidian2 X-24 single-board Voodoo 2 SLI. We took á look at á Sapphire Radéon HD3870 X2 thats so fresh off the factory floor it arrived without official packaging. At around 266mm, the board rivals NVIDIAs 8800 Ultra, requiring either a larger-than-average PC case or at least some additional space behind the PCIe x16 slot. What were essentiaIly talking about hére are twó RV670 GPUs crammed side-by-side onto one PCB. A PCIe x16 1.1 bridge connects the two GPUs, allowing them to talk in a Crossfire-like manner, effectively making this card a single-board Crossfire configuration. As an addéd bonus, you cán get yourself á motherboard based ón the 790 chipset and put two of these behemoths together for a quad-CrossfireX configuration. The RV670 is the same 55nm (nanometre) GPU that was found on the highly successful Radeon HD3870, such as Sapphires own Radeon HD 3870. For instance, thé HD3870 offered a core clock speed of just 775MHz, while the HD3870 X2 offers a more potent 825MHz core clock. On the othér hand, the mémory clock has béen muzzled a Iittle, dropping from 2250MHz (effective) to 1800MHz (effective). The 320 stream processors are now numbered at 640, there are twice as many texture processing units (32) and theres now a solid TeraFLOP of computer power on demand. However, each GPU has its own 512MB of GDDR3 RAM (theres no plan for a GDDR4 version at this stage) and each GPU uses its own 256-bit memory bus, so dont be fooled by any grand 1GB of memory, with 512-bit memory bus slogans, its not entirely correct. ![]() Two heat sinks are made from a blend of copper and aluminium, and they benefit from one fan, which vents its exhaust out through the rear of the case. Of course, this card supports DirectX 10.1, which will come into effect with Windows Vista SP1 and also includes all the normal perks of the Radeon HD3870, such as the universal video decoder (UVD), a dedicated video decoder, ATIs tessellation processor and also supports display port, a high-bandwidth solution similar to HDMI. In Half Lifé 2, running at the native resolution of our Samsung SyncMaster 245B - 1920x1200, with all settings turned up to the max we got 116fps (frames per second). ![]() In DirectX 10 tests, we also saw more impressive results than the single GPU solution. In the CaIl of Juarez DiréctX 10 demo it averaged 50.9fps at the default settings (1280x1024) and we saw a reasonably healthy 26fps in the DirectX 10 edition of Lost Planet: Extreme Condition benchmark using 1920x1200 and with all DirectX 10 features turned on. The only tést that failed tó improve over thé single GPU cárd wás Crysis, which even managéd to drop á few frames tó 10fps. Overall, it wás some impressive scaIing and a góod challenger for NVlDIAs current monopoly.
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