GeForce GTS 250 1GB vs GeForce GTS 450

Intro

Compare that to the GeForce GTS 450, which uses a 40 nm design. nVidia has clocked the core speed at 783 MHz. The GDDR5 memory runs at a frequency of 902 MHz on this model. It features 192 SPUs along with 32 TAUs and 16 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTS 450		106 Watts
GeForce GTS 250 1GB		145 Watts
	Difference: 39 Watts (37%)

Memory Bandwidth

The GeForce GTS 250 1GB, in theory, should be a lot faster than the GeForce GTS 450 in general. (explain)

GeForce GTS 250 1GB		70400 MB/sec
GeForce GTS 450		57728 MB/sec
	Difference: 12672 (22%)

Texel Rate

The GeForce GTS 250 1GB will be much (about 89%) faster with regards to AF than the GeForce GTS 450. (explain)

GeForce GTS 250 1GB		47232 Mtexels/sec
GeForce GTS 450		25056 Mtexels/sec
	Difference: 22176 (89%)

Pixel Rate

If running with high levels of AA is important to you, then the GeForce GTS 450 is a better choice, though not by far. (explain)

GeForce GTS 450		12528 Mpixels/sec
GeForce GTS 250 1GB		11808 Mpixels/sec
	Difference: 720 (6%)

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 maximum amount of information (in units of megabytes per second) that can be moved past the external memory interface in one second. It's calculated by multiplying the interface width by the speed of its memory. If the card has DDR RAM, it should be multiplied by 2 again. If it uses DDR5, multiply by ANOTHER 2x. The better the card's memory bandwidth, the better 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 number of 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 better the texel rate, the better the graphics 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 maximum number of pixels that the graphics chip could possibly record to the local memory in one second - measured in millions of pixels per second. The figure is calculated by multiplying the number of colour ROPs by the the card's clock speed. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel rate also depends on lots of other factors, most notably the memory bandwidth of the card - the lower the memory bandwidth is, the lower the ability to get to the maximum fill rate.