GeForce GTX 480 vs Radeon R9 M265X

Intro

Compare that to the Radeon R9 M265X, which features core clock speeds of 575 MHz on the GPU, and 1125 MHz on the 2048 MB of GDDR5 RAM. It features 640 SPUs along with 40 TAUs and 16 Rasterization Operator Units.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Memory Bandwidth

The GeForce GTX 480 should theoretically perform much faster than the Radeon R9 M265X in general. (explain)

GeForce GTX 480		177408 MB/sec
Radeon R9 M265X		72000 MB/sec
	Difference: 105408 (146%)

Texel Rate

The GeForce GTX 480 is much (approximately 83%) faster with regards to texture filtering than the Radeon R9 M265X. (explain)

GeForce GTX 480		42000 Mtexels/sec
Radeon R9 M265X		23000 Mtexels/sec
	Difference: 19000 (83%)

Pixel Rate

The GeForce GTX 480 should be a lot (approximately 265%) faster with regards to AA than the Radeon R9 M265X, and should be capable of handling higher resolutions while still performing well. (explain)

GeForce GTX 480		33600 Mpixels/sec
Radeon R9 M265X		9200 Mpixels/sec
	Difference: 24400 (265%)

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: Memory bandwidth is the maximum amount of data (in units of megabytes per second) that can be transferred across the external memory interface in one second. It is worked out by multiplying the card's bus width by the speed of its memory. If the card has DDR type memory, it should be multiplied by 2 once again. If it uses DDR5, multiply by 4 instead. The better the memory bandwidth, the faster 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 amount of texture map elements (texels) that can be processed per second. This is worked out by multiplying the total number of texture units by the core speed of the chip. The higher the texel rate, the better the 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 that the graphics chip could possibly write to the local memory in one second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the amount of colour ROPs 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 rate is also dependant on quite a few other factors, especially the memory bandwidth of the card - the lower the bandwidth is, the lower the ability to get to the max fill rate.