GeForce GT 240 GDDR5 1GB vs Radeon HD 4750

Intro

Compare that to the Radeon HD 4750, which makes use of a 40 nm design. AMD has clocked the core speed at 730 MHz. The GDDR5 memory runs at a frequency of 800 MHz on this card. It features 640(128x5) SPUs as well as 32 TAUs and 16 Rasterization Operator Units.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GT 240 GDDR5 1GB		70 Watts
Radeon HD 4750		75 Watts
	Difference: 5 Watts (7%)

Memory Bandwidth

Theoretically, the GeForce GT 240 GDDR5 1GB should be just a bit faster than the Radeon HD 4750 in general. (explain)

GeForce GT 240 GDDR5 1GB		54400 MB/sec
Radeon HD 4750		51200 MB/sec
	Difference: 3200 (6%)

Texel Rate

The Radeon HD 4750 is a lot (more or less 33%) better at texture filtering than the GeForce GT 240 GDDR5 1GB. (explain)

Radeon HD 4750		23360 Mtexels/sec
GeForce GT 240 GDDR5 1GB		17600 Mtexels/sec
	Difference: 5760 (33%)

Pixel Rate

If running with a high resolution is important to you, then the Radeon HD 4750 is a better choice, by a large margin. (explain)

Radeon HD 4750		11680 Mpixels/sec
GeForce GT 240 GDDR5 1GB		4400 Mpixels/sec
	Difference: 7280 (165%)

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 transported over the external memory interface in one second. The number is worked out by multiplying the card's bus width by the speed of its memory. In the case of DDR memory, it must be multiplied by 2 again. If DDR5, multiply by ANOTHER 2x. The better the bandwidth is, the better the card will be in general. It especially helps with AA, HDR and higher screen resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that can be processed in one second. This number is worked out by multiplying the total number of texture units by the core 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 processed in a second.

Pixel Rate: Pixel rate is the maximum amount of pixels the graphics card could possibly write to the local memory per second - measured in millions of pixels per second. The figure is calculated by multiplying the amount of Raster Operations Pipelines by the the card's clock speed. 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 also depends on lots of other factors, most notably the memory bandwidth of the card - the lower the bandwidth is, the lower the ability to reach the maximum fill rate.