GeForce GTX 650 vs Radeon HD 5570

Intro

Compare all that to the Radeon HD 5570, which has clock speeds of 650 MHz on the GPU, and 900 MHz on the 512 MB of DDR3 memory. It features 400(80x5) SPUs along with 20 TAUs and 8 ROPs.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 5570		43 Watts
GeForce GTX 650		64 Watts
	Difference: 21 Watts (49%)

Memory Bandwidth

Theoretically speaking, the GeForce GTX 650 will be 178% faster than the Radeon HD 5570 overall, due to its higher data rate. (explain)

GeForce GTX 650		80000 MB/sec
Radeon HD 5570		28800 MB/sec
	Difference: 51200 (178%)

Texel Rate

The GeForce GTX 650 is quite a bit (approximately 160%) better at AF than the Radeon HD 5570. (explain)

GeForce GTX 650		33856 Mtexels/sec
Radeon HD 5570		13000 Mtexels/sec
	Difference: 20856 (160%)

Pixel Rate

The GeForce GTX 650 should be a lot (approximately 226%) more effective at anti-aliasing than the Radeon HD 5570, and should be able to handle higher screen resolutions more effectively. (explain)

GeForce GTX 650		16928 Mpixels/sec
Radeon HD 5570		5200 Mpixels/sec
	Difference: 11728 (226%)

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 megabytes per second) that can be moved past the external memory interface in one second. It is calculated by multiplying the card's bus width by its memory speed. If it uses DDR type RAM, the result should be multiplied by 2 once again. If it uses DDR5, multiply by 4 instead. The better the card's memory bandwidth, the better the card will be in general. It especially helps with anti-aliasing, HDR and higher screen resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that can be processed in one second. This number is calculated by multiplying the total amount of texture units by the core 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 processed in a second.

Pixel Rate: Pixel rate is the maximum number of pixels the graphics card could possibly write to its local memory in one second - measured in millions of pixels per second. The figure is worked out by multiplying the number of Raster Operations Pipelines by the the core speed of the card. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel fill rate also depends on many other factors, most notably the memory bandwidth of the card - the lower the bandwidth is, the lower the potential to reach the max fill rate.