GeForce GTX 465 vs Radeon HD 5570

Intro

Compare those specs to the Radeon HD 5570, which has a clock speed of 650 MHz and a DDR3 memory speed of 900 MHz. It also makes use of a 128-bit memory bus, and uses a 40 nm design. It is comprised of 400(80x5) SPUs, 20 TAUs, and 8 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 5570		43 Watts
GeForce GTX 465		200 Watts
	Difference: 157 Watts (365%)

Memory Bandwidth

Performance-wise, the GeForce GTX 465 should theoretically be quite a bit better than the Radeon HD 5570 in general. (explain)

GeForce GTX 465		102592 MB/sec
Radeon HD 5570		28800 MB/sec
	Difference: 73792 (256%)

Texel Rate

The GeForce GTX 465 is a lot (about 105%) faster with regards to AF than the Radeon HD 5570. (explain)

GeForce GTX 465		26708 Mtexels/sec
Radeon HD 5570		13000 Mtexels/sec
	Difference: 13708 (105%)

Pixel Rate

The GeForce GTX 465 will be a lot (more or less 274%) more effective at FSAA than the Radeon HD 5570, and able to handle higher screen resolutions better. (explain)

GeForce GTX 465		19424 Mpixels/sec
Radeon HD 5570		5200 Mpixels/sec
	Difference: 14224 (274%)

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 (counted in megabytes per second) that can be moved over the external memory interface within a second. The number is calculated by multiplying the card's bus width by its memory clock speed. In the case of DDR type RAM, the result should be multiplied by 2 again. If DDR5, multiply by 4 instead. The higher the memory bandwidth, 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 number of texture map elements (texels) that are processed in one second. This figure is worked out by multiplying the total number of texture units of the card by the core speed of the chip. The higher this number, the better the graphics card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels in a second.

Pixel Rate: Pixel rate is the most pixels the video card can possibly record to its local memory in a 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 called Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel rate also depends on lots of other factors, especially the memory bandwidth - the lower the memory bandwidth is, the lower the potential to get to the max fill rate.