GeForce GTX 295 vs Radeon R9 M380

Intro

Compare that to the Radeon R9 M380, which features core speeds of 1000 MHz on the GPU, and 1500 MHz on the 4096 MB of GDDR5 RAM. It features 640 SPUs as well as 40 Texture Address Units and 16 Rasterization Operator Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Memory Bandwidth

Theoretically speaking, the GeForce GTX 295 is 133% quicker than the Radeon R9 M380 in general, due to its higher bandwidth. (explain)

GeForce GTX 295		223776 MB/sec
Radeon R9 M380		96000 MB/sec
	Difference: 127776 (133%)

Texel Rate

The GeForce GTX 295 will be much (approximately 130%) better at texture filtering than the Radeon R9 M380. (explain)

GeForce GTX 295		92160 Mtexels/sec
Radeon R9 M380		40000 Mtexels/sec
	Difference: 52160 (130%)

Pixel Rate

The GeForce GTX 295 is much (about 102%) better at full screen anti-aliasing than the Radeon R9 M380, and will be able to handle higher screen resolutions without slowing down too much. (explain)

GeForce GTX 295		32256 Mpixels/sec
Radeon R9 M380		16000 Mpixels/sec
	Difference: 16256 (102%)

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: Bandwidth is the max amount of information (in units of megabytes per second) that can be transported across the external memory interface in a second. It is calculated by multiplying the card's interface width by the speed of its memory. In the case of DDR type memory, it should be multiplied by 2 once again. If it uses DDR5, multiply by 4 instead. The higher the card's memory bandwidth, the better the card will be in general. It especially helps with AA, High Dynamic Range and high resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that are processed in one second. This is calculated by multiplying the total texture units by the core clock speed of the chip. The better the texel rate, the better the video card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied in a second.

Pixel Rate: Pixel rate is the maximum amount of pixels the video card could possibly write to the local memory in one second - measured in millions of pixels per second. The number is worked out by multiplying the number of ROPs by the the card's clock speed. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel fill rate is also dependant on many other factors, especially the memory bandwidth of the card - the lower the memory bandwidth is, the lower the potential to reach the maximum fill rate.