GeForce 8800 GTX vs GeForce GTS 450

Intro

Compare all that to the GeForce GTS 450, which has a core clock frequency of 783 MHz and a GDDR5 memory speed of 902 MHz. It also makes use of a 128-bit bus, and makes use of a 40 nm design. It is made up of 192 SPUs, 32 Texture Address Units, and 16 ROPs.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTS 450		106 Watts
GeForce 8800 GTX		155 Watts
	Difference: 49 Watts (46%)

Memory Bandwidth

The GeForce 8800 GTX should theoretically perform quite a bit faster than the GeForce GTS 450 in general. (explain)

GeForce 8800 GTX		86400 MB/sec
GeForce GTS 450		57728 MB/sec
	Difference: 28672 (50%)

Texel Rate

The GeForce 8800 GTX should be much (about 47%) faster with regards to AF than the GeForce GTS 450. (explain)

GeForce 8800 GTX		36800 Mtexels/sec
GeForce GTS 450		25056 Mtexels/sec
	Difference: 11744 (47%)

Pixel Rate

If running with a high screen resolution is important to you, then the GeForce 8800 GTX is superior to the GeForce GTS 450, but it probably won't make a huge difference. (explain)

GeForce 8800 GTX		13800 Mpixels/sec
GeForce GTS 450		12528 Mpixels/sec
	Difference: 1272 (10%)

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 maximum amount of information (counted in megabytes per second) that can be transported past the external memory interface in a second. It is worked out by multiplying the interface width by its memory speed. If the card has DDR memory, the result should be multiplied by 2 once again. If DDR5, multiply by ANOTHER 2x. The higher the card's 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 texture map elements (texels) that are applied in one second. This is worked out by multiplying the total number of texture units of the card by the core speed of the chip. The higher this number, the better the card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied per second.

Pixel Rate: Pixel rate is the maximum amount of pixels the video card could possibly write to its local memory in one second - measured in millions of pixels per second. The number is worked out by multiplying the amount of colour ROPs by the clock speed of the card. ROPs (Raster Operations Pipelines - also called 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 - the lower the bandwidth is, the lower the ability to get to the max fill rate.