GeForce GTX 260 vs Radeon R9 M265X

Intro

Compare all that to the Radeon R9 M265X, which makes use of a 28 nm design. AMD has clocked the core speed at 575 MHz. The GDDR5 memory works at a speed of 1125 MHz on this particular card. It features 640 SPUs along with 40 TAUs and 16 ROPs.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Memory Bandwidth

The GeForce GTX 260 should in theory perform much faster than the Radeon R9 M265X overall. (explain)

GeForce GTX 260		111888 MB/sec
Radeon R9 M265X		72000 MB/sec
	Difference: 39888 (55%)

Texel Rate

The GeForce GTX 260 should be a lot (more or less 60%) more effective at texture filtering than the Radeon R9 M265X. (explain)

GeForce GTX 260		36864 Mtexels/sec
Radeon R9 M265X		23000 Mtexels/sec
	Difference: 13864 (60%)

Pixel Rate

If running with high levels of AA is important to you, then the GeForce GTX 260 is superior to the Radeon R9 M265X, by a large margin. (explain)

GeForce GTX 260		16128 Mpixels/sec
Radeon R9 M265X		9200 Mpixels/sec
	Difference: 6928 (75%)

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 largest amount of information (in units of MB per second) that can be transported over the external memory interface in one second. It's calculated by multiplying the bus width by the speed of its memory. If the card has DDR RAM, the result should be multiplied by 2 once again. If DDR5, multiply by 4 instead. The better the bandwidth is, the faster the card will be in general. It especially helps with anti-aliasing, High Dynamic Range and high resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that can be applied in one second. This number is worked out by multiplying the total amount 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 handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels in one second.

Pixel Rate: Pixel rate is the most pixels that the graphics chip could possibly write to the local memory per second - measured in millions of pixels per second. The number is worked out by multiplying the amount 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 drawing the pixels (image) on the screen. The actual pixel rate also depends on quite a few other factors, most notably the memory bandwidth - the lower the bandwidth is, the lower the potential to reach the max fill rate.