GeForce GTX 465 vs Radeon R7 250X

Intro

Compare those specifications to the Radeon R7 250X, which comes with a core clock speed of 1000 MHz and a GDDR5 memory speed of 1125 MHz. It also makes use of a 128-bit memory bus, and makes use of a 28 nm design. It features 640 SPUs, 40 TAUs, and 16 Raster Operation Units.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon R7 250X		95 Watts
GeForce GTX 465		200 Watts
	Difference: 105 Watts (111%)

Memory Bandwidth

Performance-wise, the GeForce GTX 465 should in theory be a lot superior to the Radeon R7 250X overall. (explain)

GeForce GTX 465		102592 MB/sec
Radeon R7 250X		72000 MB/sec
	Difference: 30592 (42%)

Texel Rate

The Radeon R7 250X will be much (about 50%) more effective at anisotropic filtering than the GeForce GTX 465. (explain)

Radeon R7 250X		40000 Mtexels/sec
GeForce GTX 465		26708 Mtexels/sec
	Difference: 13292 (50%)

Pixel Rate

The GeForce GTX 465 should be a lot (more or less 21%) better at anti-aliasing than the Radeon R7 250X, and also will be capable of handling higher screen resolutions without slowing down too much. (explain)

GeForce GTX 465		19424 Mpixels/sec
Radeon R7 250X		16000 Mpixels/sec
	Difference: 3424 (21%)

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 maximum amount of information (in units of MB per second) that can be transferred over the external memory interface in one second. It is calculated by multiplying the interface width by its memory speed. If the card has DDR type RAM, 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 anti-aliasing, HDR and high resolutions.

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

Pixel Rate: Pixel rate is the most pixels the graphics card can possibly write to the local memory per second - measured in millions of pixels per second. The number is calculated by multiplying the amount of Raster Operations Pipelines by the the core speed of the card. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel output rate is also dependant on lots of other factors, especially the memory bandwidth - the lower the memory bandwidth is, the lower the potential to reach the max fill rate.