GeForce 8800 GTX vs Radeon R7 250

Intro

Compare those specifications to the Radeon R7 250, which makes use of a 28 nm design. AMD has set the core frequency at 1000 MHz. The GDDR5 memory is set to run at a speed of 1150 MHz on this particular model. It features 384 SPUs as well as 24 TAUs and 8 Rasterization Operator Units.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon R7 250		65 Watts
GeForce 8800 GTX		155 Watts
	Difference: 90 Watts (138%)

Memory Bandwidth

As far as performance goes, the GeForce 8800 GTX should theoretically be a bit better than the Radeon R7 250 overall. (explain)

GeForce 8800 GTX		86400 MB/sec
Radeon R7 250		73600 MB/sec
	Difference: 12800 (17%)

Texel Rate

The GeForce 8800 GTX should be quite a bit (approximately 53%) faster with regards to texture filtering than the Radeon R7 250. (explain)

GeForce 8800 GTX		36800 Mtexels/sec
Radeon R7 250		24000 Mtexels/sec
	Difference: 12800 (53%)

Pixel Rate

The GeForce 8800 GTX is a lot (approximately 73%) faster with regards to AA than the Radeon R7 250, and also should be able to handle higher screen resolutions while still performing well. (explain)

GeForce 8800 GTX		13800 Mpixels/sec
Radeon R7 250		8000 Mpixels/sec
	Difference: 5800 (73%)

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 (counted in MB per second) that can be transferred across the external memory interface within a second. The number is worked out by multiplying the card's bus width by its memory speed. In the case of DDR type RAM, it should be multiplied by 2 once again. If DDR5, multiply by ANOTHER 2x. The better the memory bandwidth, the better the card will be in general. It especially helps with anti-aliasing, HDR and high resolutions.

Texel Rate: Texel rate is the maximum number of texture map elements (texels) that can be applied in one second. This number is calculated by multiplying the total number of texture units of the card by the core clock speed of the chip. The higher the texel rate, the better the graphics card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels per second.

Pixel Rate: Pixel rate is the most pixels that the graphics chip could possibly write to its local memory in a second - measured in millions of pixels per second. The number is calculated by multiplying the number of colour ROPs by the the core speed of the card. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel fill rate also depends on many other factors, especially the memory bandwidth - the lower the memory bandwidth is, the lower the potential to reach the max fill rate.