Compare any two graphics cards:
Radeon HD 6670 (OEM) 1GB vs Radeon HD 7770
IntroThe Radeon HD 6670 (OEM) 1GB makes use of a 40 nm design. ATi has set the core frequency at 800 MHz. The GDDR5 memory works at a speed of 1000 MHz on this specific card. It features 480 SPUs as well as 24 TAUs and 8 Rasterization Operator Units.
Compare that to the Radeon HD 7770, which uses a 28 nm design. ATi has set the core frequency at 1000 MHz. The GDDR5 memory runs at a frequency of 1125 MHz on this card. It features 640 SPUs along with 40 Texture Address Units and 16 ROPs.
(No game benchmarks for this combination yet.)
Power Usage and Theoretical Benchmarks
Power Consumption (Max TDP)
The Radeon HD 7770, in theory, should be a little bit faster than the Radeon HD 6670 (OEM) 1GB overall. (explain)
Texel RateThe Radeon HD 7770 is a lot (more or less 108%) faster with regards to AF than the Radeon HD 6670 (OEM) 1GB. (explain)
Pixel RateThe Radeon HD 7770 should be much (more or less 150%) more effective at AA than the Radeon HD 6670 (OEM) 1GB, and also should be capable of handling higher resolutions more effectively. (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: Bandwidth is the largest amount of data (in units of megabytes per second) that can be transported past the external memory interface within a second. It is calculated by multiplying the card's interface width by its memory speed. If the card has DDR RAM, the result should be multiplied by 2 once again. If DDR5, multiply by ANOTHER 2x. The better the bandwidth is, the faster the card will be in general. It especially helps with AA, HDR and high resolutions.
Texel Rate: Texel rate is the maximum number of texture map elements (texels) that can be applied in one second. This is calculated by multiplying the total texture units by the core clock speed of the chip. The better this number, the better the video card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied in one second.
Pixel Rate: Pixel rate is the maximum amount of pixels the graphics card could possibly write to the local memory in one second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the number of ROPs by the the card's clock speed. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel fill rate is also dependant on lots of other factors, especially the memory bandwidth of the card - the lower the bandwidth is, the lower the ability to get to the max fill rate.