GeForce GTX 650 vs Radeon HD 5670

Intro

Compare those specifications to the Radeon HD 5670, which features a clock frequency of 775 MHz and a GDDR5 memory frequency of 1000 MHz. It also uses a 128-bit bus, and uses a 40 nm design. It is comprised of 400(80x5) SPUs, 20 TAUs, and 8 Raster Operation Units.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 5670		61 Watts
GeForce GTX 650		64 Watts
	Difference: 3 Watts (5%)

Memory Bandwidth

Performance-wise, the GeForce GTX 650 should in theory be quite a bit better than the Radeon HD 5670 in general. (explain)

GeForce GTX 650		80000 MB/sec
Radeon HD 5670		64000 MB/sec
	Difference: 16000 (25%)

Texel Rate

The GeForce GTX 650 will be quite a bit (about 118%) more effective at AF than the Radeon HD 5670. (explain)

GeForce GTX 650		33856 Mtexels/sec
Radeon HD 5670		15500 Mtexels/sec
	Difference: 18356 (118%)

Pixel Rate

If running with lots of anti-aliasing is important to you, then the GeForce GTX 650 is the winner, and very much so. (explain)

GeForce GTX 650		16928 Mpixels/sec
Radeon HD 5670		6200 Mpixels/sec
	Difference: 10728 (173%)

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

Specifications

Memory Bandwidth: Memory bandwidth is the largest amount of information (counted in MB per second) that can be transferred over the external memory interface in one second. The number is worked out by multiplying the interface width by the speed of its memory. In the case of DDR RAM, it must be multiplied by 2 again. If it uses DDR5, multiply by ANOTHER 2x. The better the memory bandwidth, the faster the card will be in general. It especially helps with AA, HDR and high resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that can be applied in one second. This is calculated by multiplying the total amount of texture units by the core speed of the chip. The higher the texel rate, the better the 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 maximum number 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 amount of colour ROPs by the clock speed of the card. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel output rate is also dependant on quite a few other factors, especially the memory bandwidth - the lower the bandwidth is, the lower the potential to get to the maximum fill rate.