GeForce 8800 GTX vs Radeon R7 250X

Intro

Compare those specifications to the Radeon R7 250X, which makes use of a 28 nm design. AMD has clocked the core frequency at 1000 MHz. The GDDR5 RAM is set to run at a frequency of 1125 MHz on this specific model. It features 640 SPUs as well as 40 Texture Address Units and 16 Rasterization Operator Units.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon R7 250X		95 Watts
GeForce 8800 GTX		155 Watts
	Difference: 60 Watts (63%)

Memory Bandwidth

The GeForce 8800 GTX, in theory, should be a little bit faster than the Radeon R7 250X in general. (explain)

GeForce 8800 GTX		86400 MB/sec
Radeon R7 250X		72000 MB/sec
	Difference: 14400 (20%)

Texel Rate

The Radeon R7 250X will be a little bit (about 9%) faster with regards to anisotropic filtering than the GeForce 8800 GTX. (explain)

Radeon R7 250X		40000 Mtexels/sec
GeForce 8800 GTX		36800 Mtexels/sec
	Difference: 3200 (9%)

Pixel Rate

If using lots of anti-aliasing is important to you, then the Radeon R7 250X is a better choice, but only just. (explain)

Radeon R7 250X		16000 Mpixels/sec
GeForce 8800 GTX		13800 Mpixels/sec
	Difference: 2200 (16%)

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: Bandwidth is the maximum amount of information (measured in MB per second) that can be moved past the external memory interface in one second. It is worked out by multiplying the card's interface width by the speed of its memory. If the card has DDR type RAM, the result should be multiplied by 2 again. If it uses DDR5, multiply by ANOTHER 2x. The higher the card's 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 texture map elements (texels) that are processed per second. This figure is worked out by multiplying the total texture units of the card by the core clock speed of the chip. The higher the texel rate, the better the card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels in one second.

Pixel Rate: Pixel rate is the maximum number of pixels that the graphics card can possibly write to its local memory in one 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 - aka Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel rate is also dependant on lots of other factors, especially the memory bandwidth - the lower the bandwidth is, the lower the ability to reach the max fill rate.