GeForce 8800 GTS (G80) 320MB vs Radeon R7 M265

Intro

Compare all that to the Radeon R7 M265, which has a GPU core clock speed of 725 MHz, and 2048 MB of DDR3 RAM running at 1000 MHz through a 128-bit bus. It also features 384 SPUs, 24 Texture Address Units, and 8 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Memory Bandwidth

Theoretically speaking, the GeForce 8800 GTS (G80) 320MB will be 98% faster than the Radeon R7 M265 in general, because of its higher data rate. (explain)

GeForce 8800 GTS (G80) 320MB		63360 MB/sec
Radeon R7 M265		32000 MB/sec
	Difference: 31360 (98%)

Texel Rate

The GeForce 8800 GTS (G80) 320MB should be quite a bit (more or less 42%) better at AF than the Radeon R7 M265. (explain)

GeForce 8800 GTS (G80) 320MB		24624 Mtexels/sec
Radeon R7 M265		17400 Mtexels/sec
	Difference: 7224 (42%)

Pixel Rate

The GeForce 8800 GTS (G80) 320MB should be a lot (approximately 77%) more effective at AA than the Radeon R7 M265, and also will be capable of handling higher screen resolutions without losing too much performance. (explain)

GeForce 8800 GTS (G80) 320MB		10260 Mpixels/sec
Radeon R7 M265		5800 Mpixels/sec
	Difference: 4460 (77%)

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 (in units of MB per second) that can be transported across the external memory interface in a second. It's calculated by multiplying the card's bus width by its memory speed. In the case of DDR RAM, the result should be multiplied by 2 once again. If it uses DDR5, multiply by ANOTHER 2x. The better the bandwidth is, the faster the card will be in general. It especially helps with anti-aliasing, High Dynamic Range and high resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that are applied per second. This is calculated by multiplying the total amount of texture units by the core clock speed of the chip. The higher 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 most pixels that the graphics card can possibly record to the local memory in a second - measured in millions of pixels per second. The figure is worked out by multiplying the amount of Render Output Units by the the core clock speed. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel output rate also depends on quite a few other factors, most notably the memory bandwidth - the lower the bandwidth is, the lower the potential to reach the max fill rate.