GeForce 8800 GTX vs GeForce GT 450 (OEM)

Intro

Compare those specs to the GeForce GT 450 (OEM), which has a clock speed of 790 MHz and a GDDR5 memory frequency of 1000 MHz. It also uses a 192-bit memory bus, and makes use of a 40 nm design. It is made up of 144 SPUs, 24 TAUs, and 24 Raster Operation Units.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

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

Memory Bandwidth

Theoretically, the GeForce GT 450 (OEM) should perform just a bit faster than the GeForce 8800 GTX in general. (explain)

GeForce GT 450 (OEM)		96000 MB/sec
GeForce 8800 GTX		86400 MB/sec
	Difference: 9600 (11%)

Texel Rate

The GeForce 8800 GTX will be quite a bit (more or less 94%) more effective at AF than the GeForce GT 450 (OEM). (explain)

GeForce 8800 GTX		36800 Mtexels/sec
GeForce GT 450 (OEM)		18960 Mtexels/sec
	Difference: 17840 (94%)

Pixel Rate

The GeForce GT 450 (OEM) should be a lot (about 37%) faster with regards to AA than the GeForce 8800 GTX, and also will be capable of handling higher screen resolutions better. (explain)

GeForce GT 450 (OEM)		18960 Mpixels/sec
GeForce 8800 GTX		13800 Mpixels/sec
	Difference: 5160 (37%)

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 data (in units of megabytes per second) that can be moved across the external memory interface in a second. It is worked out by multiplying the bus width by its memory speed. If the card has DDR memory, it must be multiplied by 2 once again. If DDR5, multiply by ANOTHER 2x. The better the memory bandwidth, the faster the card will be in general. It especially helps with AA, High Dynamic Range and higher screen resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that are processed in one second. This number is worked out by multiplying the total texture units by the core clock speed of the chip. The better this number, the better the card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels per second.

Pixel Rate: Pixel rate is the maximum amount of pixels the graphics card could possibly record to its local memory per second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the amount of Raster Operations Pipelines by the the core clock speed. 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 lots of other factors, especially the memory bandwidth - the lower the bandwidth is, the lower the ability to get to the max fill rate.