GeForce GT 450 (OEM) vs GeForce GTX 260

Intro

Compare those specs to the GeForce GTX 260, which comes with a clock frequency of 576 MHz and a GDDR3 memory frequency of 999 MHz. It also features a 448-bit bus, and uses a 65 nm design. It is made up of 192 SPUs, 64 Texture Address Units, and 28 Raster Operation Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GT 450 (OEM)		106 Watts
GeForce GTX 260		182 Watts
	Difference: 76 Watts (72%)

Memory Bandwidth

Performance-wise, the GeForce GTX 260 should theoretically be just a bit better than the GeForce GT 450 (OEM) overall. (explain)

GeForce GTX 260		111888 MB/sec
GeForce GT 450 (OEM)		96000 MB/sec
	Difference: 15888 (17%)

Texel Rate

The GeForce GTX 260 is a lot (about 94%) more effective at texture filtering than the GeForce GT 450 (OEM). (explain)

GeForce GTX 260		36864 Mtexels/sec
GeForce GT 450 (OEM)		18960 Mtexels/sec
	Difference: 17904 (94%)

Pixel Rate

The GeForce GT 450 (OEM) will be a bit (more or less 18%) faster with regards to anti-aliasing than the GeForce GTX 260, and should be capable of handling higher resolutions while still performing well. (explain)

GeForce GT 450 (OEM)		18960 Mpixels/sec
GeForce GTX 260		16128 Mpixels/sec
	Difference: 2832 (18%)

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 information (counted in MB per second) that can be transferred over the external memory interface in a second. It is worked out by multiplying the bus width by its memory speed. If it uses DDR memory, the result should be multiplied by 2 once again. If it uses DDR5, multiply by 4 instead. The higher the bandwidth is, the faster the card will be in general. It especially helps with anti-aliasing, High Dynamic Range and high resolutions.

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

Pixel Rate: Pixel rate is the most pixels the video card could possibly write to its local memory in one second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the number of Render Output Units 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 fill rate is also dependant on quite a few other factors, most notably the memory bandwidth - the lower the memory bandwidth is, the lower the potential to get to the max fill rate.