GeForce GTX 465 vs Radeon R9 M280X

Intro

Compare those specifications to the Radeon R9 M280X, which uses a 28 nm design. AMD has set the core speed at 900 MHz. The GDDR5 memory is set to run at a frequency of 1375 MHz on this specific card. It features 896 SPUs along with 56 Texture Address Units and 16 ROPs.

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

The GeForce GTX 465 should in theory perform a little bit faster than the Radeon R9 M280X overall. (explain)

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

Texel Rate

The Radeon R9 M280X should be a lot (approximately 89%) more effective at AF than the GeForce GTX 465. (explain)

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

Pixel Rate

The GeForce GTX 465 will be much (about 35%) more effective at anti-aliasing than the Radeon R9 M280X, and also will be capable of handling higher resolutions more effectively. (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 maximum amount of data (measured in megabytes per second) that can be moved across the external memory interface in one second. The number is calculated by multiplying the bus width by its memory clock speed. If it uses DDR memory, it should be multiplied by 2 once again. If DDR5, multiply by 4 instead. The better the card's memory bandwidth, the better the card will be in general. It especially helps with AA, HDR and higher screen resolutions.

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

Pixel Rate: Pixel rate is the maximum number of pixels that the graphics chip could possibly record to the local memory in a second - measured in millions of pixels per second. The figure is worked out by multiplying the number of Render Output Units by the the core clock speed. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel fill rate also depends on quite a few other factors, most notably the memory bandwidth of the card - the lower the bandwidth is, the lower the ability to get to the max fill rate.