GeForce GTX 465 vs Radeon R9 M280X

Intro

Compare all of that to the Radeon R9 M280X, which makes use of a 28 nm design. AMD has set the core speed at 900 MHz. The GDDR5 RAM runs at a speed of 1375 MHz on this model. It features 896 SPUs as well as 56 Texture Address Units and 16 Rasterization Operator Units.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon R9 M280X		75 Watts
GeForce GTX 465		200 Watts
	Difference: 125 Watts (167%)

Memory Bandwidth

In theory, the GeForce GTX 465 will be 17% faster than the Radeon R9 M280X overall, because of its greater data rate. (explain)

GeForce GTX 465		102592 MB/sec
Radeon R9 M280X		88000 MB/sec
	Difference: 14592 (17%)

Texel Rate

The Radeon R9 M280X will be much (about 89%) faster with regards to texture filtering than the GeForce GTX 465. (explain)

Radeon R9 M280X		50400 Mtexels/sec
GeForce GTX 465		26708 Mtexels/sec
	Difference: 23692 (89%)

Pixel Rate

If running with a high resolution is important to you, then the GeForce GTX 465 is the winner, and very much so. (explain)

GeForce GTX 465		19424 Mpixels/sec
Radeon R9 M280X		14400 Mpixels/sec
	Difference: 5024 (35%)

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 transported over the external memory interface in one second. It's worked out by multiplying the bus width by the speed of its memory. In the case of DDR type RAM, it must be multiplied by 2 again. If it uses DDR5, multiply by 4 instead. The higher the card's memory bandwidth, the faster 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 number is calculated by multiplying the total texture units by the core speed of the chip. The better this number, 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 maximum amount of pixels the graphics card can possibly write to the local memory in one second - measured in millions of pixels per second. The figure is calculated by multiplying the amount of ROPs by the clock 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 rate also depends on lots of other factors, most notably the memory bandwidth of the card - the lower the memory bandwidth is, the lower the potential to get to the maximum fill rate.