GeForce GTX 570 vs Radeon R9 M275X

Intro

Compare that to the Radeon R9 M275X, which comes with core clock speeds of 900 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

Power Consumption (Max TDP)

Radeon R9 M275X		50 Watts
GeForce GTX 570		219 Watts
	Difference: 169 Watts (338%)

Memory Bandwidth

The GeForce GTX 570 should in theory perform quite a bit faster than the Radeon R9 M275X in general. (explain)

GeForce GTX 570		152000 MB/sec
Radeon R9 M275X		72000 MB/sec
	Difference: 80000 (111%)

Texel Rate

The GeForce GTX 570 should be quite a bit (more or less 22%) better at anisotropic filtering than the Radeon R9 M275X. (explain)

GeForce GTX 570		43920 Mtexels/sec
Radeon R9 M275X		36000 Mtexels/sec
	Difference: 7920 (22%)

Pixel Rate

The GeForce GTX 570 is quite a bit (more or less 103%) more effective at full screen anti-aliasing than the Radeon R9 M275X, and also will be capable of handling higher screen resolutions while still performing well. (explain)

GeForce GTX 570		29280 Mpixels/sec
Radeon R9 M275X		14400 Mpixels/sec
	Difference: 14880 (103%)

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 largest amount of data (in units of MB per second) that can be transferred over the external memory interface within a second. It is worked out by multiplying the bus width by the speed of its memory. If the card has DDR RAM, it must be multiplied by 2 again. If 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 texture map elements (texels) that are processed per second. This number is calculated by multiplying the total amount of texture units by the core speed of the chip. The higher this number, the better the video card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied per second.

Pixel Rate: Pixel rate is the maximum number of pixels the graphics card could possibly record to its local memory in one second - measured in millions of pixels per second. The figure is calculated by multiplying the number of colour ROPs by the the card's clock speed. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel fill rate also depends on lots of other factors, especially the memory bandwidth - the lower the bandwidth is, the lower the ability to get to the maximum fill rate.