GeForce GTX 260 vs Radeon R9 M395X

Intro

Compare all that to the Radeon R9 M395X, which has a core clock frequency of 723 MHz and a GDDR5 memory speed of 1250 MHz. It also uses a 256-bit bus, and uses a 28 nm design. It is comprised of 2048 SPUs, 128 TAUs, and 32 Raster Operation Units.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon R9 M395X		125 Watts
GeForce GTX 260		182 Watts
	Difference: 57 Watts (46%)

Memory Bandwidth

As far as performance goes, the Radeon R9 M395X should theoretically be a lot better than the GeForce GTX 260 in general. (explain)

Radeon R9 M395X		160000 MB/sec
GeForce GTX 260		111888 MB/sec
	Difference: 48112 (43%)

Texel Rate

The Radeon R9 M395X should be quite a bit (about 151%) more effective at AF than the GeForce GTX 260. (explain)

Radeon R9 M395X		92544 Mtexels/sec
GeForce GTX 260		36864 Mtexels/sec
	Difference: 55680 (151%)

Pixel Rate

The Radeon R9 M395X should be a lot (about 43%) faster with regards to FSAA than the GeForce GTX 260, and will be capable of handling higher resolutions while still performing well. (explain)

Radeon R9 M395X		23136 Mpixels/sec
GeForce GTX 260		16128 Mpixels/sec
	Difference: 7008 (43%)

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: Bandwidth is the max amount of data (counted in MB per second) that can be transferred across the external memory interface within a second. It's calculated by multiplying the card's bus width by the speed of its memory. If it uses DDR memory, the result should be multiplied by 2 again. If it uses DDR5, multiply by 4 instead. The higher the bandwidth is, the better 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 number of texture units of the card by the core speed of the chip. The better the texel rate, the better the graphics card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied per second.

Pixel Rate: Pixel rate is the maximum amount of pixels the video card could possibly record to its local memory in one second - measured in millions of pixels per second. The figure is worked out by multiplying the amount of Render Output Units by the the core clock speed. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel output rate also depends on quite a few other factors, especially the memory bandwidth - the lower the memory bandwidth is, the lower the ability to reach the maximum fill rate.