GeForce GT 240 GDDR5 1GB vs Radeon HD 5570

Intro

Compare that to the Radeon HD 5570, which has clock speeds of 650 MHz on the GPU, and 900 MHz on the 512 MB of DDR3 memory. It features 400(80x5) SPUs along with 20 TAUs and 8 Rasterization Operator Units.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 5570		43 Watts
GeForce GT 240 GDDR5 1GB		70 Watts
	Difference: 27 Watts (63%)

Memory Bandwidth

As far as performance goes, the GeForce GT 240 GDDR5 1GB should theoretically be quite a bit superior to the Radeon HD 5570 overall. (explain)

GeForce GT 240 GDDR5 1GB		54400 MB/sec
Radeon HD 5570		28800 MB/sec
	Difference: 25600 (89%)

Texel Rate

The GeForce GT 240 GDDR5 1GB is quite a bit (approximately 35%) more effective at AF than the Radeon HD 5570. (explain)

GeForce GT 240 GDDR5 1GB		17600 Mtexels/sec
Radeon HD 5570		13000 Mtexels/sec
	Difference: 4600 (35%)

Pixel Rate

If using a high resolution is important to you, then the Radeon HD 5570 is superior to the GeForce GT 240 GDDR5 1GB, though only just barely. (explain)

Radeon HD 5570		5200 Mpixels/sec
GeForce GT 240 GDDR5 1GB		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 across the external memory interface in one second. It's worked out by multiplying the card's bus width by the speed of its memory. If the card has DDR type RAM, the result should be multiplied by 2 once again. If DDR5, multiply by 4 instead. The better the card's 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 texture map elements (texels) that can be processed per second. This number is calculated 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 handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied in a second.

Pixel Rate: Pixel rate is the maximum amount of pixels the graphics card could possibly write to the local memory in a second - measured in millions of pixels per second. The figure is worked out by multiplying the number of ROPs by the the core 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 many other factors, especially the memory bandwidth of the card - the lower the memory bandwidth is, the lower the potential to reach the maximum fill rate.