GeForce GTX 465 vs Radeon R9 280X

Intro

Compare that to the Radeon R9 280X, which has clock speeds of 850 MHz on the GPU, and 1500 MHz on the 3072 MB of GDDR5 memory. It features 2048 SPUs along with 128 Texture Address Units and 32 Rasterization Operator Units.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 465		200 Watts
Radeon R9 280X		250 Watts
	Difference: 50 Watts (25%)

Memory Bandwidth

The Radeon R9 280X should in theory be a lot faster than the GeForce GTX 465 overall. (explain)

Radeon R9 280X		288000 MB/sec
GeForce GTX 465		102592 MB/sec
	Difference: 185408 (181%)

Texel Rate

The Radeon R9 280X will be a lot (more or less 307%) faster with regards to texture filtering than the GeForce GTX 465. (explain)

Radeon R9 280X		108800 Mtexels/sec
GeForce GTX 465		26708 Mtexels/sec
	Difference: 82092 (307%)

Pixel Rate

If running with a high resolution is important to you, then the Radeon R9 280X is superior to the GeForce GTX 465, and very much so. (explain)

Radeon R9 280X		27200 Mpixels/sec
GeForce GTX 465		19424 Mpixels/sec
	Difference: 7776 (40%)

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 max amount of data (measured in MB per second) that can be transported over the external memory interface within a second. It is calculated by multiplying the card's bus width by its memory speed. If the card has DDR RAM, it must be multiplied by 2 again. If DDR5, multiply by 4 instead. The higher the bandwidth is, the faster the card will be in general. It especially helps with AA, High Dynamic Range and higher screen resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that can be applied in one second. This figure is worked out by multiplying the total amount of texture units by the core clock speed of the chip. The better the texel rate, the better the 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 maximum amount of pixels the graphics card could possibly write to the local memory per second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the amount of ROPs by the the core clock speed. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel output rate is also dependant on quite a few other factors, especially the memory bandwidth - the lower the memory bandwidth is, the lower the ability to get to the maximum fill rate.