GPU-wide comparison
| Graphics cards | NVIDIA GeForce GTX 295 1,792MB | 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 5870 1,048MB | ATI Radeon HD 5850 1,024MB | AMD Radeon HD 5770 1,024MB | AMD Radeon HD 5750 1,024MB | AMD Radeon HD 4890 1,024MB | AMD Radeon HD 4870 512MB | AMD Radeon HD 4850 512MB |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| PCIe | PCIe 2.0 | |||||||||||
| GPU(s) clock | 576MHz | 648MHz | 602MHz | 633MHz | 576MHz | 850MHz | 725MHz | 850MHz | 700MHz | 850MHz | 750MHz | 625MHz |
| Shader clock | 1,242MHz | 1,476MHz | 1,296MHz | 1,404MHz | 1,242MHz | 850MHz | 725MHz | 850MHz | 700MHz | 850MHz | 750MHz | 625MHz |
| Memory clock (effective) | 1,998MHz | 2,484MHz | 2,214MHz | 2,322MHz | 1,998MHz | 4,800MHz | 4,000MHz | 4,800MHz | 4,600MHz | 3,900MHz | 3,600MHz | 1,986MHz |
| Memory interface and size | 896-bit (2 x 448-bit), 1,792MB, GDDR3 | 512-bit, 1,024MB, GDDR3 | 512-bit, 1,024MB, GDDR3 | 448-bit, 896MB, GDDR3 | 448-bit, 896MB, GDDR3 | 256-bit, 1,024MB, GDDR5 | 256-bit, 1,024MB, GDDR5 | 128-bit,
1,024MB, GDDR5 |
128-bit, 1,024MB, GDDR5 | 256-bit, 1,024MB, GDDR5 | 256-bit, 512MB, GDDR5 | 256-bit, 512MB, GDDR3 |
| Memory bandwidth | 223.8GB/s |
159GB/s |
141.7GB/s |
130GB/s |
111.9GB/s |
153.6GB/s | 128GB/s |
76.8GB/s |
73.6GB/s |
124.8GB/s |
115.2GB/s | 63.5GB/s |
| Manufacturing process | TSMC, 55nm | TSMC, 55nm | TSMC, 65nm | TSMC, 55nm | TSMC, 55nm | TSMC, 40nm | TSMC, 40nm | TSMC, 40nm | TSMC, 40nm | TSMC, 55nm | TSMC, 55nm | TSMC, 55nm |
| DirectX/ Shader Model | DX10, 4.0 | DX10, 4.0 | DX10, 4.0 | DX10, 4.0 | DX10, 4.0 | DX11, 5.0 | DX11, 5.0 | DX11.1, 5.0 | DX11, 5.0 | 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)) | 1,440 FP32 scalar ALUs, MADD dual-issue (unified) | 800 FP32 scalar ALUs, MADD dual-issue (unified) | 720 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) |
| Data sampling and filtering | 160ppc address and 160ppc bilinear INT8/80ppc FP16 filtering, max 16xAF | 80ppc address and 80ppc bilinear INT8/40ppc FP16 filtering, max 16xAF | 80ppc address and 80ppc bilinear INT8/40ppc FP16 filtering, max 16xAF | 72ppc address and 72ppc bilinear INT8/36ppc FP16 filtering, max 16xAF | 72ppc address and 72ppc bilinear INT8/36ppc FP16 filtering, max 16xAF | 80ppc address and 80ppc bilinear INT8/40ppc FP16 filtering, max 16xAF | 72ppc address and 72ppc bilinear INT8/36ppc FP16 filtering, max 16xAF | 40ppc address and 40ppc bilinear INT8/40ppc FP16 filtering, max 16xAF | 36ppc address and 36ppc bilinear INT8/40ppc FP16 filtering, max 16xAF | 40ppc address and 40ppc bilinear INT8/20ppc FP16 filtering, max 16xAF | 40ppc address and 40ppc bilinear INT8/20ppc FP16 filtering, max 16xAF | 40ppc address and 40ppc bilinear INT8/ 20ppc FP16 filtering, max 16xAF |
| ROPs | 56 | 32 | 32 | 28 | 28 | 32 | 32 | 16 | 16 | 16 | 16 | 16 |
| Peak GFLOPS | 1,788 | 1,063 | 933 | 1,011 | 805 | 2,720 |
2,160 | 1,360 | 1,008 | 1,360 | 1,200 | 1,000 |
| Peak fillrate Gpixels/s | 32.256 | 20.736 | 19.264 | 17.724 | 16.128 | 27.2 |
23.2 |
13.6 | 11.2 | 13.6 | 12 | 10 |
| Peak Gtexel/s (bilinear) | 92.2 | 51.84 | 48.16 | 45.576 | 41.472 | 68 |
52.2 |
34 | 25.2 | 34 | 30 | 25 |
| Peak Gtexel/s (FP16, bilinear) | 46.1 | 25.92 | 24.09 | 22.788 | 20.736 | 34 |
26.1 | 17 | 12.6 | 17 | 15 | 12.5 |
| Board power (max) | 289W | 183W | 236W | 219W |
182W |
188W | 151W |
108W | 86W |
190W |
160W | 110W |
| Connectors (native) | 2 x dual-link DVI, HDTV-out,HDMI | 2x
dual-link DVI HDTV-out |
2x
dual-link DVI HDTV-out |
2x
dual-link DVI HDTV-out |
2x
dual-link DVI HDTV-out |
2x
dual-link DVI HDMI, DisplayPort, HDTV-out, Eyefinity |
2x
dual-link DVI HDMI, DisplayPort, HDTV-out, Eyefinity |
2x
dual-link DVI HDMI, DisplayPort, HDTV-out, Eyefinity |
2x
dual-link DVI HDMI, DisplayPort, HDTV-out, Eyefinity |
2x
dual-link DVI HDMI, DisplayPort, HDTV-out |
2x
dual-link DVI HDMI, DisplayPort, HDTV-out |
2x
dual-link DVI HDMI, DisplayPort, HDTV-out |
| Current price | £350 | £240 |
N/A | £160 |
£135 |
£299 |
£200 |
£125 |
£109 |
£140 |
£110 | £80 |
Analysis
As always, an apples-to-apples technical comparison is difficult
because one man's
shaders
and memory-bandwidth operate at a different efficiency than another's.
AMD and its partners will be running down stock of 4-series GPUs, but looking across in terms of specification, the Radeon HD 5770 should benchmark at between Radeon HD 4850 and HD 4870, with the HD 5850 a touch lower.
Interestingly, such has been the price-cutting on 4-series Radeons and the GeForce GTX 260, that AMD's new cards may well not provide the best bang4buck in a pure performance sense. We reckon that DX11 gaming titles will be required to meaningfully differentiate these cards from the DX10/10.1 parts.Scoping the green team's mainstream champion, the GeForce GTX 260 may well prove to be faster than both new 5-series Radeons, but it's an older, larger, hotter, less-well-rounded design that will cost considerably more to produce.
