GeForce GTX 295 vs Radeon R9 M395X

Intro

Compare that to the Radeon R9 M395X, which has clock speeds of 723 MHz on the GPU, and 1250 MHz on the 4096 MB of GDDR5 RAM. It features 2048 SPUs along with 128 TAUs and 32 Rasterization Operator Units.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon R9 M395X		125 Watts
GeForce GTX 295		289 Watts
	Difference: 164 Watts (131%)

Memory Bandwidth

Theoretically speaking, the GeForce GTX 295 should be 40% faster than the Radeon R9 M395X overall, because of its higher bandwidth. (explain)

GeForce GTX 295		223776 MB/sec
Radeon R9 M395X		160000 MB/sec
	Difference: 63776 (40%)

Texel Rate

The Radeon R9 M395X is just a bit (about 0%) more effective at texture filtering than the GeForce GTX 295. (explain)

Radeon R9 M395X		92544 Mtexels/sec
GeForce GTX 295		92160 Mtexels/sec
	Difference: 384 (0%)

Pixel Rate

The GeForce GTX 295 should be quite a bit (about 39%) more effective at full screen anti-aliasing than the Radeon R9 M395X, and also should be able to handle higher screen resolutions while still performing well. (explain)

GeForce GTX 295		32256 Mpixels/sec
Radeon R9 M395X		23136 Mpixels/sec
	Difference: 9120 (39%)

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.

One or more cards in this comparison are multi-core. This means that their bandwidth, texel and pixel rates are theoretically doubled - this does not mean the card will actually perform twice as fast, but only that it should in theory be able to. Actual game benchmarks will give a more accurate idea of what it's capable of.

Price Comparison

Specifications

Memory Bandwidth: Memory bandwidth is the max amount of data (in units of MB per second) that can be transferred over the external memory interface in one second. It's worked out by multiplying the interface width by its memory clock speed. If it uses DDR type RAM, it should be multiplied by 2 once again. If it uses DDR5, multiply by ANOTHER 2x. The higher the card's 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 processed in one second. This figure is worked out by multiplying the total texture units of the card by the core clock speed of the chip. The better this number, the better the graphics card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed in one second.

Pixel Rate: Pixel rate is the most pixels that the graphics card can possibly record to the local memory in one second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the amount of Render Output Units by the the core clock speed. ROPs (Raster Operations Pipelines - also called 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, most notably the memory bandwidth of the card - the lower the bandwidth is, the lower the ability to get to the maximum fill rate.