GeForce 8800 GTS (G80) 640MB vs Radeon R7 240

Intro

Compare those specs to the Radeon R7 240, which comes with GPU clock speed of 730 MHz, and 2048 MB of DDR3 RAM set to run at 900 MHz through a 128-bit bus. It also is comprised of 320 Stream Processors, 20 TAUs, and 8 ROPs.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon R7 240		30 Watts
GeForce 8800 GTS (G80) 640MB		143 Watts
	Difference: 113 Watts (377%)

Memory Bandwidth

Theoretically, the GeForce 8800 GTS (G80) 640MB should be much faster than the Radeon R7 240 overall. (explain)

GeForce 8800 GTS (G80) 640MB		63360 MB/sec
Radeon R7 240		28800 MB/sec
	Difference: 34560 (120%)

Texel Rate

The GeForce 8800 GTS (G80) 640MB will be much (approximately 69%) more effective at texture filtering than the Radeon R7 240. (explain)

GeForce 8800 GTS (G80) 640MB		24624 Mtexels/sec
Radeon R7 240		14600 Mtexels/sec
	Difference: 10024 (69%)

Pixel Rate

If running with a high screen resolution is important to you, then the GeForce 8800 GTS (G80) 640MB is the winner, by far. (explain)

GeForce 8800 GTS (G80) 640MB		10260 Mpixels/sec
Radeon R7 240		5840 Mpixels/sec
	Difference: 4420 (76%)

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: Bandwidth is the maximum amount of information (measured in MB per second) that can be moved past the external memory interface within a second. The number is calculated by multiplying the card's interface width by its memory speed. If it uses DDR RAM, the result should be multiplied by 2 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 higher screen resolutions.

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

Pixel Rate: Pixel rate is the maximum number of pixels the video card can possibly write to its local memory in a second - measured in millions of pixels per second. The figure is worked out by multiplying the amount of Raster Operations Pipelines by the clock speed of the card. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel output rate also depends on quite a few other factors, especially the memory bandwidth of the card - the lower the memory bandwidth is, the lower the ability to get to the max fill rate.