GeForce GTX 295 vs Radeon R9 380 2G

Intro

Compare those specifications to the Radeon R9 380 2G, which has a core clock speed of 970 MHz and a GDDR5 memory speed of 1425 MHz. It also uses a 256-bit bus, and uses a 28 nm design. It features 1792 SPUs, 112 TAUs, and 32 Raster Operation Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon R9 380 2G		190 Watts
GeForce GTX 295		289 Watts
	Difference: 99 Watts (52%)

Memory Bandwidth

Performance-wise, the GeForce GTX 295 should theoretically be much superior to the Radeon R9 380 2G overall. (explain)

GeForce GTX 295		223776 MB/sec
Radeon R9 380 2G		182400 MB/sec
	Difference: 41376 (23%)

Texel Rate

The Radeon R9 380 2G should be just a bit (approximately 18%) faster with regards to AF than the GeForce GTX 295. (explain)

Radeon R9 380 2G		108640 Mtexels/sec
GeForce GTX 295		92160 Mtexels/sec
	Difference: 16480 (18%)

Pixel Rate

If running with high levels of AA is important to you, then the GeForce GTX 295 is a better choice, not by a very large margin though. (explain)

GeForce GTX 295		32256 Mpixels/sec
Radeon R9 380 2G		31040 Mpixels/sec
	Difference: 1216 (4%)

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 maximum amount of data (in units of megabytes per second) that can be moved over the external memory interface in one second. The number is calculated by multiplying the card's interface width by its memory speed. In the case of DDR RAM, it must be multiplied by 2 again. If it uses DDR5, multiply by 4 instead. 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 texture map elements (texels) that are applied per second. This is worked out by multiplying the total number of texture units of the card by the core clock 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 in a second.

Pixel Rate: Pixel rate is the maximum number of pixels the graphics card can possibly record to the local memory in one second - measured in millions of pixels per second. The number is calculated by multiplying the number of Raster Operations Pipelines by the the card's clock speed. 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 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 max fill rate.