GeForce GTS 250 1GB vs Geforce GTX 690

Intro

Compare those specs to the Geforce GTX 690, which has core speeds of 915 MHz on the GPU, and 1502 MHz on the 2048 MB of GDDR5 RAM. It features 1536 SPUs as well as 128 TAUs and 32 Rasterization Operator Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTS 250 1GB		145 Watts
Geforce GTX 690		300 Watts
	Difference: 155 Watts (107%)

Memory Bandwidth

Theoretically, the Geforce GTX 690 should be quite a bit faster than the GeForce GTS 250 1GB in general. (explain)

Geforce GTX 690		384512 MB/sec
GeForce GTS 250 1GB		70400 MB/sec
	Difference: 314112 (446%)

Texel Rate

The Geforce GTX 690 is quite a bit (approximately 396%) better at AF than the GeForce GTS 250 1GB. (explain)

Geforce GTX 690		234240 Mtexels/sec
GeForce GTS 250 1GB		47232 Mtexels/sec
	Difference: 187008 (396%)

Pixel Rate

If using high levels of AA is important to you, then the Geforce GTX 690 is a better choice, by far. (explain)

Geforce GTX 690		58560 Mpixels/sec
GeForce GTS 250 1GB		11808 Mpixels/sec
	Difference: 46752 (396%)

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.

One or more cards in this comparison are multi-core. This means that their bandwidth, texel and pixel rates are theoretically doubled - this does not mean the card will actually perform twice as fast, but only that it should in theory be able to. Actual game benchmarks will give a more accurate idea of what it's capable of.

Price Comparison

Specifications

Memory Bandwidth: Memory bandwidth is the largest amount of data (in units of MB per second) that can be transported past the external memory interface in one second. The number is worked out by multiplying the card's bus width by the speed of its memory. In the case of DDR type memory, it must be multiplied by 2 once again. If it uses DDR5, multiply by 4 instead. The better the card's memory bandwidth, the faster the card will be in general. It especially helps with AA, HDR and high resolutions.

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

Pixel Rate: Pixel rate is the most pixels that the graphics chip could possibly write to the local memory in one second - measured in millions of pixels per second. The number is worked out by multiplying the amount of Raster Operations Pipelines by the clock speed of the card. ROPs (Raster Operations Pipelines - also called 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 memory bandwidth is, the lower the potential to reach the maximum fill rate.