GeForce GTX 295 vs Radeon R9 390X 8G

Intro

Compare those specifications to the Radeon R9 390X 8G, which uses a 28 nm design. AMD has clocked the core frequency at 1050 MHz. The GDDR5 memory runs at a speed of 1500 MHz on this particular model. It features 2816 SPUs along with 176 Texture Address Units and 64 Rasterization Operator Units.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon R9 390X 8G		275 Watts
GeForce GTX 295		289 Watts
	Difference: 14 Watts (5%)

Memory Bandwidth

The Radeon R9 390X 8G should in theory be much faster than the GeForce GTX 295 overall. (explain)

Radeon R9 390X 8G		384000 MB/sec
GeForce GTX 295		223776 MB/sec
	Difference: 160224 (72%)

Texel Rate

The Radeon R9 390X 8G should be a lot (more or less 101%) more effective at anisotropic filtering than the GeForce GTX 295. (explain)

Radeon R9 390X 8G		184800 Mtexels/sec
GeForce GTX 295		92160 Mtexels/sec
	Difference: 92640 (101%)

Pixel Rate

If running with a high screen resolution is important to you, then the Radeon R9 390X 8G is a better choice, by far. (explain)

Radeon R9 390X 8G		67200 Mpixels/sec
GeForce GTX 295		32256 Mpixels/sec
	Difference: 34944 (108%)

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 (measured in megabytes per second) that can be moved past the external memory interface in one second. The number is calculated by multiplying the bus width by its memory speed. In the case of DDR type memory, it should be multiplied by 2 once again. If 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 number of texture map elements (texels) that can be processed in one second. This is worked out by multiplying the total amount of texture units of the card by the core 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 applied in one second.

Pixel Rate: Pixel rate is the maximum amount of pixels the graphics card could possibly write to the local memory per second - measured in millions of pixels per second. The number is calculated by multiplying the number of Raster Operations Pipelines by the clock speed of the card. 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 fill rate also depends on lots of other factors, most notably the memory bandwidth - the lower the bandwidth is, the lower the potential to get to the max fill rate.