GeForce GT 240 GDDR5 vs GeForce GTS 450 1GB

Intro

Compare those specs to the GeForce GTS 450 1GB, which uses a 40 nm design. nVidia has clocked the core speed at 783 MHz. The GDDR5 memory is set to run at a speed of 902 MHz on this model. It features 192 SPUs as well as 32 Texture Address Units and 16 Rasterization Operator Units.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GT 240 GDDR5		70 Watts
GeForce GTS 450 1GB		106 Watts
	Difference: 36 Watts (51%)

Memory Bandwidth

Theoretically speaking, the GeForce GTS 450 1GB should perform just a bit faster than the GeForce GT 240 GDDR5 overall. (explain)

GeForce GTS 450 1GB		57728 MB/sec
GeForce GT 240 GDDR5		54400 MB/sec
	Difference: 3328 (6%)

Texel Rate

The GeForce GTS 450 1GB is much (more or less 42%) better at texture filtering than the GeForce GT 240 GDDR5. (explain)

GeForce GTS 450 1GB		25056 Mtexels/sec
GeForce GT 240 GDDR5		17600 Mtexels/sec
	Difference: 7456 (42%)

Pixel Rate

If using a high resolution is important to you, then the GeForce GTS 450 1GB is a better choice, by a large margin. (explain)

GeForce GTS 450 1GB		12528 Mpixels/sec
GeForce GT 240 GDDR5		4400 Mpixels/sec
	Difference: 8128 (185%)

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 max amount of information (measured in megabytes per second) that can be transported over the external memory interface in one second. It is calculated by multiplying the card's bus width by the speed of its memory. If it uses DDR RAM, the result should be multiplied by 2 again. If DDR5, multiply by ANOTHER 2x. The better the card's memory bandwidth, the better the card will be in general. It especially helps with anti-aliasing, HDR and higher screen resolutions.

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

Pixel Rate: Pixel rate is the maximum number of pixels that the graphics chip can possibly record to the local memory in a second - measured in millions of pixels per second. The number is calculated by multiplying the number of Render Output Units by the the card's clock speed. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel fill rate also depends on many other factors, especially the memory bandwidth of the card - the lower the memory bandwidth is, the lower the potential to get to the max fill rate.