 |
 |
|
|
|
Geforce GTX 670 vs Radeon HD 7850
Intro
The Geforce GTX 670 uses a 28 nm design. nVidia has set the core frequency at 915 MHz. The GDDR5 memory works at a speed of 1500 MHz on this card. It features 1344 SPUs as well as 112 TAUs and 32 ROPs.Compare those specs to the Radeon HD 7850, which has a clock speed of 860 MHz and a GDDR5 memory speed of 1200 MHz. It also uses a 256-bit bus, and uses a 28 nm design. It is made up of 1024 SPUs, 64 TAUs, and 32 Raster Operation Units.
Power Usage and Theoretical Benchmarks
Power Consumption (Max TDP)
| Radeon HD 7850 |
|
130 Watts |
| Geforce GTX 670 |
|
170 Watts |
|
|
Memory Bandwidth
Theoretically speaking, the Geforce GTX 670 should be 25% faster than the Radeon HD 7850 in general, due to its greater data rate. (explain)
| Geforce GTX 670 |
|
192000 MB/sec |
| Radeon HD 7850 |
|
153600 MB/sec |
|
|
Texel Rate
The Geforce GTX 670 is a lot (about 86%) better at AF than the Radeon HD 7850. (explain)| Geforce GTX 670 |
|
102480 Mtexels/sec |
| Radeon HD 7850 |
|
55040 Mtexels/sec |
|
|
Pixel Rate
The Geforce GTX 670 should be a little bit (about 6%) better at FSAA than the Radeon HD 7850, and capable of handling higher screen resolutions while still performing well. (explain)| Geforce GTX 670 |
|
29280 Mpixels/sec |
| Radeon HD 7850 |
|
27520 Mpixels/sec |
|
|
Please note that the above 'benchmarks' are all just theoretical - the results were calculated based on the card's specifications, and real-world performance may (and probably will) vary at least a bit.
Price Comparison
Geforce GTX 670Amazon.com
|
Radeon HD 7850Amazon.com
|
Please note that the price comparisons are based on search keywords - sometimes it might show cards with very similar names that are not exactly the same as the one chosen in the comparison. We do try to filter out the wrong results as best we can, though.
Specifications
| Model | Geforce GTX 670 | Radeon HD 7850 |
|---|---|---|
| Manufacturer | nVidia | AMD |
| Year | May 2012 | March 2012 |
| Code Name | GK104 | Pitcairn Pro |
| Fab Process | 28 nm | 28 nm |
| Bus | PCIe 3.0 x16 | PCIe 3.0 x16 |
| Memory | 2048 MB | 2048 MB |
| Core Speed | 915 MHz | 860 MHz |
| Shader Speed | 915 MHz | (N/A) MHz |
| Memory Speed | 1500 MHz (6000 MHz effective) | 1200 MHz (4800 MHz effective) |
| Unified Shaders | 1344 | 1024 |
| Texture Mapping Units | 112 | 64 |
| Render Output Units | 32 | 32 |
| Bus Type | GDDR5 | GDDR5 |
| Bus Width | 256-bit | 256-bit |
| DirectX Version | DirectX 11.0 | DirectX 11.1 |
| OpenGL Version | OpenGL 4.2 | OpenGL 4.2 |
| Power (Max TDP) | 170 watts | 130 watts |
| Shader Model | 5.0 | 5.0 |
| Bandwidth | 192000 MB/sec | 153600 MB/sec |
| Texel Rate | 102480 Mtexels/sec | 55040 Mtexels/sec |
| Pixel Rate | 29280 Mpixels/sec | 27520 Mpixels/sec |
Memory Bandwidth: Bandwidth is the largest amount of data (in units of megabytes per second) that can be transported over the external memory interface in one second. It is worked out by multiplying the interface width by the speed of its memory. In the case of DDR memory, it should be multiplied by 2 once again. If DDR5, multiply by 4 instead. The higher the card's memory bandwidth, the faster the card will be in general. It especially helps with anti-aliasing, HDR and high resolutions.
Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that are processed per second. This number is calculated by multiplying the total amount of texture units of the card by the core clock speed of the chip. The better the texel rate, the better the card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels in one second.
Pixel Rate: Pixel rate is the most pixels the video card could possibly write to the local memory per second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the number of Render Output Units by the the core speed of the card. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel fill rate also depends on lots of other factors, especially the memory bandwidth of the card - the lower the memory bandwidth is, the lower the potential to get to the maximum fill rate.
Comments
One Response to “Geforce GTX 670 vs Radeon HD 7850”I was Between GTX 670 and HD 7970 but considering that GTX 670 is using much lower power consumption and have more overclock stabillity than HD 7970 was the reason that i bought GTX 670!!!
Both cards are great if you play sport/rpg/simulator/strategy games then go for AMD if you play games like Battlefield 3 or Crysis 3 or Batman Arkham city then nVidia all the way!
Moreover nVidia drivers are much better than ATi's is!