GeForce GTS 250 1GB vs Geforce GTX 670

Intro

Compare that to the Geforce GTX 670, which comes with a clock frequency of 915 MHz and a GDDR5 memory frequency of 1500 MHz. It also uses a 256-bit memory bus, and uses a 28 nm design. It is made up of 1344 SPUs, 112 Texture Address Units, and 32 Raster Operation Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTS 250 1GB		145 Watts
Geforce GTX 670		170 Watts
	Difference: 25 Watts (17%)

Memory Bandwidth

Theoretically speaking, the Geforce GTX 670 will be 173% faster than the GeForce GTS 250 1GB overall, due to its greater data rate. (explain)

Geforce GTX 670		192000 MB/sec
GeForce GTS 250 1GB		70400 MB/sec
	Difference: 121600 (173%)

Texel Rate

The Geforce GTX 670 should be much (more or less 117%) faster with regards to texture filtering than the GeForce GTS 250 1GB. (explain)

Geforce GTX 670		102480 Mtexels/sec
GeForce GTS 250 1GB		47232 Mtexels/sec
	Difference: 55248 (117%)

Pixel Rate

The Geforce GTX 670 is much (more or less 148%) better at FSAA than the GeForce GTS 250 1GB, and also will be able to handle higher resolutions better. (explain)

Geforce GTX 670		29280 Mpixels/sec
GeForce GTS 250 1GB		11808 Mpixels/sec
	Difference: 17472 (148%)

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 data (in units of megabytes per second) that can be transported across the external memory interface within a second. It is calculated by multiplying the card's interface width by its memory clock speed. If it uses DDR RAM, the result should be multiplied by 2 once again. If it uses DDR5, multiply by 4 instead. The higher the memory bandwidth, the faster 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 processed per second. This is worked out by multiplying the total amount of texture units of the card by the core 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 maximum number of pixels the graphics card can possibly record to the local memory per second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the number of ROPs by the the core clock speed. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel rate also depends on lots of other factors, most notably the memory bandwidth of the card - the lower the bandwidth is, the lower the ability to reach the maximum fill rate.