GeForce GTX 650 vs Radeon HD 3470 512MB

Intro

Compare those specifications to the Radeon HD 3470 512MB, which has core speeds of 800 MHz on the GPU, and 950 MHz on the 512 MB of GDDR3 memory. It features 40(8x5) SPUs as well as 4 TAUs and 4 Rasterization Operator Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Memory Bandwidth

Theoretically speaking, the GeForce GTX 650 should be 163% quicker than the Radeon HD 3470 512MB in general, because of its higher bandwidth. (explain)

GeForce GTX 650		80000 MB/sec
Radeon HD 3470 512MB		30400 MB/sec
	Difference: 49600 (163%)

Texel Rate

The GeForce GTX 650 is much (about 958%) more effective at texture filtering than the Radeon HD 3470 512MB. (explain)

GeForce GTX 650		33856 Mtexels/sec
Radeon HD 3470 512MB		3200 Mtexels/sec
	Difference: 30656 (958%)

Pixel Rate

If using lots of anti-aliasing is important to you, then the GeForce GTX 650 is a better choice, by far. (explain)

GeForce GTX 650		16928 Mpixels/sec
Radeon HD 3470 512MB		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: Bandwidth is the largest amount of data (in units of megabytes per second) that can be transferred over the external memory interface in one second. The number is worked out by multiplying the interface width by its memory speed. If the card has DDR type RAM, it must be multiplied by 2 once again. If DDR5, multiply by 4 instead. The higher the bandwidth is, the better 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 per second. This figure is worked out by multiplying the total texture units of the card by the core clock speed of the chip. The better the texel rate, 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 can possibly write to the local memory in a second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the amount of Render Output Units by the the core clock speed. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel output rate is also dependant on lots of other factors, most notably the memory bandwidth - the lower the bandwidth is, the lower the ability to reach the max fill rate.