GeForce GT 240 GDDR5 vs Radeon HD 5670

Intro

Compare that to the Radeon HD 5670, which features a clock speed of 775 MHz and a GDDR5 memory speed of 1000 MHz. It also features 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 Raster Operation Units.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 5670		61 Watts
GeForce GT 240 GDDR5		70 Watts
	Difference: 9 Watts (15%)

Memory Bandwidth

Theoretically speaking, the Radeon HD 5670 should be 18% quicker than the GeForce GT 240 GDDR5 in general, because of its greater data rate. (explain)

Radeon HD 5670		64000 MB/sec
GeForce GT 240 GDDR5		54400 MB/sec
	Difference: 9600 (18%)

Texel Rate

The GeForce GT 240 GDDR5 is a little bit (approximately 14%) more effective at AF than the Radeon HD 5670. (explain)

GeForce GT 240 GDDR5		17600 Mtexels/sec
Radeon HD 5670		15500 Mtexels/sec
	Difference: 2100 (14%)

Pixel Rate

The Radeon HD 5670 should be quite a bit (more or less 41%) more effective at FSAA than the GeForce GT 240 GDDR5, and also will be capable of handling higher screen resolutions while still performing well. (explain)

Radeon HD 5670		6200 Mpixels/sec
GeForce GT 240 GDDR5		4400 Mpixels/sec
	Difference: 1800 (41%)

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 max amount of data (counted in megabytes per second) that can be transferred across the external memory interface in one second. It is worked out by multiplying the bus width by the speed of its memory. If it uses DDR type RAM, it must be multiplied by 2 once again. If it uses DDR5, multiply by ANOTHER 2x. The better the memory bandwidth, the better the card will be in general. It especially helps with AA, High Dynamic Range and high resolutions.

Texel Rate: Texel rate is the maximum number of texture map elements (texels) that are applied per second. This figure is worked out by multiplying the total texture units by the core speed of the chip. The higher the texel rate, the better the graphics 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 most pixels the video card could possibly write to the local memory per second - measured in millions of pixels per second. The number is worked out by multiplying the amount of Raster Operations Pipelines by the clock speed of the card. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel rate also depends on many other factors, especially the memory bandwidth - the lower the bandwidth is, the lower the ability to reach the max fill rate.