The Table Of Terror
Confused by all the numbers on the previous pages? Let's add to the discombolulation with a greater array of numbers and specs.| Graphics cards | NVIDIA GeForce GTX 295 | NVIDIA
GeForce GTX 285 1,024MB |
NVIDIA GeForce GTX 280 1,024MB | NVIDIA GeForce GTX 275 896MB | NVIDIA GeForce GTX 260 896MB | ATI Radeon HD 4870 X2 2,048MB | ATI Radeon HD 4850 X2 2,048MB | ATI Radeon HD 4890 OC 1,024MB | ATI Radeon HD 4890 XT 1,024MB | ATI Radeon HD 4870 512MB/1,024MB | ATI Radeon HD 4850 512MB |
|---|---|---|---|---|---|---|---|---|---|---|---|
| PCIe | PCIe 2.0 | ||||||||||
| GPU(s) clock | 576MHz | 648MHz | 602MHz | 633MHz | 576MHz | 750MHz | 625MHz | 900MHz | 850MHz | 750MHz | 625MHz |
| Shader clock | 1,242MHz | 1,476MHz | 1,296MHz | 1,404MHz | 1,242MHz | 750MHz | 625MHz | 900MHz | 850MHz | 750MHz | 625MHz |
| Memory clock (effective) | 1,998MHz | 2,484MHz | 2,214MHz | 2,268MHz | 1,998MHz | 3,600MHz | 1,986MHz | 3,900MHz* | 3,900MHz | 3,600MHz | 1,986MHz |
| Memory interface and size | 448-bit (per GPU), 1,792MB, GDDR3 | 512-bit, 1,024MB, GDDR3 | 512-bit, 1,024MB, GDDR3 | 448-bit, 896MB, GDDR3 | 448-bit, 896MB, GDDR3 | 512-bit (2x 256-bit), 2,048MB, GDDR5 | 512-bit (2x 256-bit), 2,048MB, GDDR3 | 256-bit, 1,024MB, GDDR5 | 256-bit, 1,024MB, GDDR5 | 256-bit, 512MB/1,024MB, GDDR5 | 256-bit, 512MB, GDDR3 |
| DirectX/ Shader Model | DX10, 4.0 | DX10, 4.0 | DX10, 4.0 | DX10, 4.0 | DX10, 4.0 | DX10.1, 4.1 | DX10.1, 4.1 | DX10.1, 4.1 | DX10.1, 4.1 | DX10.1, 4.1 | DX10.1, 4.1 |
| Vertex, fragment, geometry shading (shared) | 480 FP32 scalar ALUs, MADD dual-issue + MUL (unified) | 240 FP32 scalar ALUs, MADD dual-issue + MUL (unified) | 240 FP32 scalar ALUs, MADD dual-issue + MUL (unified) | 240 FP32 scalar ALUs, MADD dual-issue + MUL (unified) | 216 FP32 scalar ALUs, MADD dual-issue + MUL (unified) | 1,600 FP32 scalar ALUs, MADD dual-issue (unified) | 1,600 FP32 scalar ALUs, MADD dual-issue (unified) | 800 FP32 scalar ALUs, MADD dual-issue (unified) | 800 FP32 scalar ALUs, MADD dual-issue (unified) | 800 FP32 scalar ALUs, MADD dual-issue (unified) | 800 FP32 scalar ALUs, MADD dual-issue (unified) |
| Multi-GPU | SLI - quad | SLI - three-board | SLI - three-board | SLI - three-board | SLI - three-board | CrossFire - two-board | CrossFire - two-board | CrossFire - four-board | CrossFire - four-board | CrossFire - four-board | CrossFire - four-board |
| Hardware-assisted video-decoding engine | NVIDIA's PureVideo HD - full H.264 decode and partial VC-1 decode, plus dual-stream decode | AMD UVD 2 - full H.264 and VC-1 decode, plus dual-stream decode | |||||||||
| Reference cooler | dual-slot | dual-slot | dual-slot | dual-slot | dual-slot | dual-slot | dual-slot | dual-slot | dual-slot | dual-slot | single-slot |
| Current etail price | £400+ | £299 | £260 | £199+ | £150+ | £325 | £260 | £225+ | £199+ | £145/£165 | £120 |
* Radeon HD 4890 OC memory-speed is up to the partner, we're informed.
There you go: clear as mud. One man's stream processor isn't as potent as another's, so let's get on to some pictures and numbers.
