GeForce GT 340 vs Radeon HD 5570

Intro

Compare those specifications to the Radeon HD 5570, which comes with a core clock frequency of 650 MHz and a DDR3 memory speed of 900 MHz. It also uses a 128-bit memory bus, and makes use of a 40 nm design. It is comprised of 400(80x5) SPUs, 20 Texture Address Units, and 8 ROPs.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 5570		43 Watts
GeForce GT 340		69 Watts
	Difference: 26 Watts (60%)

Memory Bandwidth

As far as performance goes, the GeForce GT 340 should theoretically be much better than the Radeon HD 5570 overall. (explain)

GeForce GT 340		54400 MB/sec
Radeon HD 5570		28800 MB/sec
	Difference: 25600 (89%)

Texel Rate

The GeForce GT 340 should be a lot (about 35%) more effective at AF than the Radeon HD 5570. (explain)

GeForce GT 340		17600 Mtexels/sec
Radeon HD 5570		13000 Mtexels/sec
	Difference: 4600 (35%)

Pixel Rate

If running with lots of anti-aliasing is important to you, then the Radeon HD 5570 is a better choice, but not by far. (explain)

Radeon HD 5570		5200 Mpixels/sec
GeForce GT 340		4400 Mpixels/sec
	Difference: 800 (18%)

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 (counted in megabytes per second) that can be transferred past the external memory interface in one second. It's calculated by multiplying the card's interface width by its memory speed. In the case of DDR type memory, it should be multiplied by 2 again. If it uses DDR5, multiply by ANOTHER 2x. The higher the bandwidth is, the faster the card will be in general. It especially helps with AA, High Dynamic Range and high resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that are applied in one 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 card will be at 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 can possibly write to its local memory per second - measured in millions of pixels per second. The figure is worked out by multiplying the amount of Render Output Units 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 rate is also dependant on lots of other factors, most notably the memory bandwidth of the card - the lower the memory bandwidth is, the lower the ability to get to the max fill rate.