GeForce GTX 275 vs Radeon R7 250

Intro

Compare all that to the Radeon R7 250, which features clock speeds of 1000 MHz on the GPU, and 1150 MHz on the 1024 MB of GDDR5 memory. It features 384 SPUs along with 24 Texture Address Units and 8 ROPs.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon R7 250		65 Watts
GeForce GTX 275		219 Watts
	Difference: 154 Watts (237%)

Memory Bandwidth

In theory, the GeForce GTX 275 should be much faster than the Radeon R7 250 in general. (explain)

GeForce GTX 275		127008 MB/sec
Radeon R7 250		73600 MB/sec
	Difference: 53408 (73%)

Texel Rate

The GeForce GTX 275 will be much (about 111%) better at AF than the Radeon R7 250. (explain)

GeForce GTX 275		50640 Mtexels/sec
Radeon R7 250		24000 Mtexels/sec
	Difference: 26640 (111%)

Pixel Rate

The GeForce GTX 275 will be a lot (more or less 122%) faster with regards to full screen anti-aliasing than the Radeon R7 250, and will be capable of handling higher resolutions more effectively. (explain)

GeForce GTX 275		17724 Mpixels/sec
Radeon R7 250		8000 Mpixels/sec
	Difference: 9724 (122%)

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 information (counted in megabytes per second) that can be moved over the external memory interface in a second. The number is worked out by multiplying the card's interface width by its memory speed. If the card has DDR type memory, the result should be multiplied by 2 once 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 higher screen resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that are applied per second. This figure is worked out by multiplying the total texture units by the core clock 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 processed per second.

Pixel Rate: Pixel rate is the maximum number of pixels the video card could possibly write to its local memory in a second - measured in millions of pixels per second. The figure is calculated by multiplying the number 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 rate is also dependant on quite a few other factors, most notably the memory bandwidth of the card - the lower the memory bandwidth is, the lower the ability to reach the maximum fill rate.