Compare any two graphics cards:
GeForce GTX 260 vs Radeon HD 6450 (OEM)
IntroThe GeForce GTX 260 makes use of a 65 nm design. nVidia has set the core speed at 576 MHz. The GDDR3 memory works at a frequency of 999 MHz on this specific card. It features 192 SPUs along with 64 TAUs and 28 Rasterization Operator Units.
Compare those specs to the Radeon HD 6450 (OEM), which has a clock frequency of 625 MHz and a GDDR3 memory frequency of 800 MHz. It also makes use of a 64-bit bus, and uses a 40 nm design. It is made up of 160 SPUs, 8 TAUs, and 4 Raster Operation Units.
(No game benchmarks for this combination yet.)
Power Usage and Theoretical Benchmarks
Power Consumption (Max TDP)
Performance-wise, the GeForce GTX 260 should in theory be much better than the Radeon HD 6450 (OEM) overall. (explain)
Texel RateThe GeForce GTX 260 will be a lot (approximately 637%) more effective at texture filtering than the Radeon HD 6450 (OEM). (explain)
Pixel RateThe GeForce GTX 260 is a lot (approximately 545%) better at full screen anti-aliasing than the Radeon HD 6450 (OEM), and also capable of handling higher screen 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.
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.
Memory Bandwidth: Memory bandwidth is the max amount of information (in units of MB per second) that can be transferred across the external memory interface within a second. It's worked out by multiplying the interface width by its memory speed. In the case of DDR RAM, the result should be multiplied by 2 again. If DDR5, multiply by ANOTHER 2x. The higher the bandwidth is, the faster the card will be in general. It especially helps with AA, High Dynamic Range and higher screen resolutions.
Texel Rate: Texel rate is the maximum number of texture map elements (texels) that are processed per second. This number is calculated by multiplying the total texture units of the card by the core clock speed of the chip. The higher the texel rate, the better the graphics card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied in a second.
Pixel Rate: Pixel rate is the maximum number of pixels that the graphics card could possibly record to the local memory in one second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the number of Raster Operations Pipelines by the clock speed of the card. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel output rate is also dependant on lots of other factors, especially the memory bandwidth of the card - the lower the bandwidth is, the lower the potential to reach the max fill rate.