Compare any two graphics cards:
Geforce GTX 670 vs Radeon HD 7850
IntroThe Geforce GTX 670 has a core clock speed of 915 MHz and a GDDR5 memory speed of 1500 MHz. It also makes use of a 256-bit memory bus, and uses a 28 nm design. It is made up of 1344 SPUs, 112 TAUs, and 32 Raster Operation Units.
Compare those specifications to the Radeon HD 7850, which makes use of a 28 nm design. ATi has set the core speed at 860 MHz. The GDDR5 RAM works at a frequency of 1200 MHz on this particular card. It features 1024 SPUs as well as 64 Texture Address Units and 32 Rasterization Operator Units.
(No game benchmarks for this combination yet.)
Power Usage and Theoretical Benchmarks
Power Consumption (Max TDP)
The Geforce GTX 670 should in theory perform much faster than the Radeon HD 7850 in general. (explain)
Texel RateThe Geforce GTX 670 should be quite a bit (about 86%) better at texture filtering than the Radeon HD 7850. (explain)
Pixel RateThe Geforce GTX 670 is a bit (approximately 6%) more effective at AA than the Radeon HD 7850, and will be able to handle higher resolutions without slowing down too much. (explain)
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 ComparisonPlease note that the price comparisons are based on search keywords, and might not be the exact same card listed on this page. We have no control over the accuracy of their search results.
Memory Bandwidth: Memory bandwidth is the maximum amount of information (measured in megabytes per second) that can be transported past the external memory interface in a second. The number is worked out by multiplying the interface width by its memory clock speed. If the card has DDR memory, the result should be multiplied by 2 once again. If DDR5, multiply by 4 instead. The higher the memory bandwidth, the faster the card will be in general. It especially helps with anti-aliasing, High Dynamic Range and high resolutions.
Texel Rate: Texel rate is the maximum texture map elements (texels) that are applied per second. This is worked out by multiplying the total texture units by the core speed of the chip. The better the texel rate, the better the video card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed in a second.
Pixel Rate: Pixel rate is the most pixels that the graphics card can possibly write to its local memory in a second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the number of Render Output Units by the the core clock speed. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel rate also depends on many other factors, most notably the memory bandwidth of the card - the lower the bandwidth is, the lower the ability to get to the max fill rate.