GeForce GT 240 GDDR5 vs GeForce GTX 570

Intro

Compare those specifications to the GeForce GTX 570, which comes with a core clock frequency of 732 MHz and a GDDR5 memory speed of 950 MHz. It also makes use of a 320-bit bus, and makes use of a 40 nm design. It is made up of 480 SPUs, 60 Texture Address Units, and 40 ROPs.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GT 240 GDDR5		70 Watts
GeForce GTX 570		219 Watts
	Difference: 149 Watts (213%)

Memory Bandwidth

Theoretically speaking, the GeForce GTX 570 should be a lot faster than the GeForce GT 240 GDDR5 in general. (explain)

GeForce GTX 570		152000 MB/sec
GeForce GT 240 GDDR5		54400 MB/sec
	Difference: 97600 (179%)

Texel Rate

The GeForce GTX 570 is quite a bit (about 150%) more effective at anisotropic filtering than the GeForce GT 240 GDDR5. (explain)

GeForce GTX 570		43920 Mtexels/sec
GeForce GT 240 GDDR5		17600 Mtexels/sec
	Difference: 26320 (150%)

Pixel Rate

The GeForce GTX 570 will be quite a bit (more or less 565%) more effective at AA than the GeForce GT 240 GDDR5, and should be capable of handling higher resolutions without slowing down too much. (explain)

GeForce GTX 570		29280 Mpixels/sec
GeForce GT 240 GDDR5		4400 Mpixels/sec
	Difference: 24880 (565%)

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 a second. The number is worked out by multiplying the card's interface width by its memory speed. If the card has DDR type RAM, the result should be multiplied by 2 once again. If it uses DDR5, multiply by 4 instead. The higher the memory bandwidth, the better the card will be in general. It especially helps with anti-aliasing, High Dynamic Range and higher screen 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 amount of texture units of the card by the core clock speed of the chip. The higher the texel rate, the better the video card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels per second.

Pixel Rate: Pixel rate is the most pixels that the graphics card could possibly write to its local memory in a second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the amount of Render Output Units by the clock speed of the card. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel output rate also depends on quite a few other factors, most notably the memory bandwidth of the card - the lower the memory bandwidth is, the lower the potential to reach the maximum fill rate.