GeForce GTX 650 vs Radeon HD 3470 256MB

Intro

Compare those specs to the Radeon HD 3470 256MB, which uses a 55 nm design. AMD has clocked the core speed at 800 MHz. The DDR2 RAM works at a speed of 950 MHz on this specific card. It features 40(8x5) SPUs along with 4 TAUs and 4 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Memory Bandwidth

The GeForce GTX 650 should in theory perform much faster than the Radeon HD 3470 256MB overall. (explain)

GeForce GTX 650		80000 MB/sec
Radeon HD 3470 256MB		30400 MB/sec
	Difference: 49600 (163%)

Texel Rate

The GeForce GTX 650 is quite a bit (approximately 958%) faster with regards to anisotropic filtering than the Radeon HD 3470 256MB. (explain)

GeForce GTX 650		33856 Mtexels/sec
Radeon HD 3470 256MB		3200 Mtexels/sec
	Difference: 30656 (958%)

Pixel Rate

The GeForce GTX 650 will be quite a bit (about 429%) faster with regards to anti-aliasing than the Radeon HD 3470 256MB, and also will be capable of handling higher resolutions more effectively. (explain)

GeForce GTX 650		16928 Mpixels/sec
Radeon HD 3470 256MB		3200 Mpixels/sec
	Difference: 13728 (429%)

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 transferred past the external memory interface in one second. It's worked out by multiplying the interface width by its memory speed. If the card has DDR type memory, the result should be multiplied by 2 once again. If it uses DDR5, multiply by ANOTHER 2x. The better the card's memory bandwidth, the faster the card will be in general. It especially helps with AA, HDR and higher screen resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that can be processed per second. This is calculated by multiplying the total number of texture units by the core speed of the chip. The higher this number, the better the video 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 number of pixels that the graphics chip can possibly write to its local memory in one second - measured in millions of pixels per second. The number is calculated by multiplying the amount of colour ROPs by the clock speed of the card. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel output rate also depends on quite a few other factors, especially the memory bandwidth - the lower the memory bandwidth is, the lower the potential to reach the maximum fill rate.