GeForce 8800 GTX vs Radeon R7 250

Intro

Compare all of that to the Radeon R7 250, which has a core clock frequency of 1000 MHz and a GDDR5 memory frequency of 1150 MHz. It also makes use of a 128-bit bus, and makes use of a 28 nm design. It is made up of 384 SPUs, 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 8800 GTX		155 Watts
	Difference: 90 Watts (138%)

Memory Bandwidth

Performance-wise, the GeForce 8800 GTX should theoretically be a little bit better than the Radeon R7 250 in general. (explain)

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

Texel Rate

The GeForce 8800 GTX is a lot (more or less 53%) faster with regards to AF 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 should be a lot (more or less 73%) faster with regards to anti-aliasing than the Radeon R7 250, and should be able to handle higher screen resolutions more effectively. (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 (in units of megabytes per second) that can be transported across the external memory interface in a second. The number is worked out by multiplying the bus width by the speed of its memory. If it uses DDR memory, it must be multiplied by 2 once again. If it uses DDR5, multiply by ANOTHER 2x. The better the bandwidth is, the better the card will be in general. It especially helps with AA, High Dynamic Range and high resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that are applied per second. This figure is worked out by multiplying the total texture units of the card by the core speed of the chip. The higher the texel rate, the better the video card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied per second.

Pixel Rate: Pixel rate is the most pixels the graphics card can possibly record to its local memory in a second - measured in millions of pixels per second. The figure is worked out by multiplying the amount of Raster Operations Pipelines by the the core clock speed. ROPs (Raster Operations Pipelines - also sometimes called 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 - the lower the bandwidth is, the lower the potential to reach the maximum fill rate.