GeForce GTX 465 vs Radeon HD 5670

Intro

Compare those specs to the Radeon HD 5670, which features core clock speeds of 775 MHz on the GPU, and 1000 MHz on the 1024 MB of GDDR5 memory. It features 400(80x5) SPUs along with 20 TAUs and 8 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 5670		61 Watts
GeForce GTX 465		200 Watts
	Difference: 139 Watts (228%)

Memory Bandwidth

Theoretically speaking, the GeForce GTX 465 should perform much faster than the Radeon HD 5670 overall. (explain)

GeForce GTX 465		102592 MB/sec
Radeon HD 5670		64000 MB/sec
	Difference: 38592 (60%)

Texel Rate

The GeForce GTX 465 is much (more or less 72%) more effective at AF than the Radeon HD 5670. (explain)

GeForce GTX 465		26708 Mtexels/sec
Radeon HD 5670		15500 Mtexels/sec
	Difference: 11208 (72%)

Pixel Rate

The GeForce GTX 465 will be much (approximately 213%) faster with regards to AA than the Radeon HD 5670, and will be capable of handling higher screen resolutions better. (explain)

GeForce GTX 465		19424 Mpixels/sec
Radeon HD 5670		6200 Mpixels/sec
	Difference: 13224 (213%)

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 max amount of information (measured in MB per second) that can be moved across the external memory interface in one second. It's calculated by multiplying the card's interface width by the speed of its memory. If the card has DDR memory, it should be multiplied by 2 once again. If it uses DDR5, multiply by ANOTHER 2x. The better the memory bandwidth, the faster the card will be in general. It especially helps with anti-aliasing, High Dynamic Range and high resolutions.

Texel Rate: Texel rate is the maximum amount of 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 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 in one second.

Pixel Rate: Pixel rate is the maximum amount of pixels the graphics card could possibly record to its local memory in one second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the amount of Render Output Units by the clock speed of the card. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel 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 potential to get to the max fill rate.