GeForce 8800 GTS (G80) 320MB vs Radeon R9 M380

Intro

Compare those specs to the Radeon R9 M380, which features clock speeds of 1000 MHz on the GPU, and 1500 MHz on the 4096 MB of GDDR5 memory. It features 640 SPUs as well as 40 TAUs and 16 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Memory Bandwidth

The Radeon R9 M380 should theoretically be a lot faster than the GeForce 8800 GTS (G80) 320MB in general. (explain)

Radeon R9 M380		96000 MB/sec
GeForce 8800 GTS (G80) 320MB		63360 MB/sec
	Difference: 32640 (52%)

Texel Rate

The Radeon R9 M380 should be much (approximately 62%) faster with regards to AF than the GeForce 8800 GTS (G80) 320MB. (explain)

Radeon R9 M380		40000 Mtexels/sec
GeForce 8800 GTS (G80) 320MB		24624 Mtexels/sec
	Difference: 15376 (62%)

Pixel Rate

The Radeon R9 M380 is quite a bit (approximately 56%) better at full screen anti-aliasing than the GeForce 8800 GTS (G80) 320MB, and also will be able to handle higher screen resolutions without slowing down too much. (explain)

Radeon R9 M380		16000 Mpixels/sec
GeForce 8800 GTS (G80) 320MB		10260 Mpixels/sec
	Difference: 5740 (56%)

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 maximum amount of information (in units of MB per second) that can be transported past the external memory interface in a second. The number is worked out by multiplying the card's bus width by the speed of its memory. If the card has DDR RAM, the result should be multiplied by 2 once again. If it uses DDR5, multiply by ANOTHER 2x. The higher the memory bandwidth, the better 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 texture map elements (texels) that can be applied per second. This number is calculated by multiplying the total texture units by the core clock speed of the chip. The higher this number, the better the card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels in a second.

Pixel Rate: Pixel rate is the most pixels the graphics card can possibly write to the local memory in one second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the number 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 fill rate also depends on lots of other factors, especially the memory bandwidth of the card - the lower the memory bandwidth is, the lower the ability to reach the maximum fill rate.