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GeForce GTS 250 1GB vs GeForce GTX 650 Ti 2GB

Intro

The GeForce GTS 250 1GB comes with a core clock speed of 738 MHz and a GDDR3 memory frequency of 1100 MHz. It also features a 256-bit memory bus, and makes use of a 65/55 nm design. It is comprised of 128 SPUs, 64 TAUs, and 16 ROPs.

Compare that to the GeForce GTX 650 Ti 2GB, which features a GPU core clock speed of 928 MHz, and 2048 MB of GDDR5 memory running at 1350 MHz through a 128-bit bus. It also features 768 SPUs, 64 TAUs, and 16 Raster Operation Units.

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 650 Ti 2GB 110 Watts
GeForce GTS 250 1GB 145 Watts
Difference: 35 Watts (32%)

Memory Bandwidth

In theory, the GeForce GTX 650 Ti 2GB will be 23% quicker than the GeForce GTS 250 1GB overall, because of its greater data rate. (explain)

GeForce GTX 650 Ti 2GB 86400 MB/sec
GeForce GTS 250 1GB 70400 MB/sec
Difference: 16000 (23%)

Texel Rate

The GeForce GTX 650 Ti 2GB is quite a bit (more or less 26%) more effective at anisotropic filtering than the GeForce GTS 250 1GB. (explain)

GeForce GTX 650 Ti 2GB 59392 Mtexels/sec
GeForce GTS 250 1GB 47232 Mtexels/sec
Difference: 12160 (26%)

Pixel Rate

The GeForce GTX 650 Ti 2GB is a lot (about 26%) better at AA than the GeForce GTS 250 1GB, and also should be capable of handling higher screen resolutions without slowing down too much. (explain)

GeForce GTX 650 Ti 2GB 14848 Mpixels/sec
GeForce GTS 250 1GB 11808 Mpixels/sec
Difference: 3040 (26%)

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

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GeForce GTS 250 1GB

Amazon.com

Check prices at:

GeForce GTX 650 Ti 2GB

Amazon.com

Check prices at:

Please note that the price comparisons are based on search keywords - sometimes it might show cards with very similar names that are not exactly the same as the one chosen in the comparison. We do try to filter out the wrong results as best we can, though.

Specifications

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Model GeForce GTS 250 1GB GeForce GTX 650 Ti 2GB
Manufacturer nVidia nVidia
Year March 3, 2009 October 2012
Code Name G92a/b GK106
Memory 1024 MB 2048 MB
Core Speed 738 MHz 928 MHz
Memory Speed 2200 MHz 5400 MHz
Power (Max TDP) 145 watts 110 watts
Bandwidth 70400 MB/sec 86400 MB/sec
Texel Rate 47232 Mtexels/sec 59392 Mtexels/sec
Pixel Rate 11808 Mpixels/sec 14848 Mpixels/sec
Unified Shaders 128 768
Texture Mapping Units 64 64
Render Output Units 16 16
Bus Type GDDR3 GDDR5
Bus Width 256-bit 128-bit
Fab Process 65/55 nm 28 nm
Transistors 754 million 2540 million
Bus PCIe x16 2.0 PCIe 3.0 x16
DirectX Version DirectX 10 DirectX 11.0
OpenGL Version OpenGL 3.1 OpenGL 4.3

Memory Bandwidth: Memory bandwidth is the maximum amount of data (in units of megabytes per second) that can be transported over the external memory interface in one second. The number is calculated by multiplying the card's bus width by its memory speed. In the case of DDR memory, it must be multiplied by 2 again. If it uses DDR5, multiply by ANOTHER 2x. The higher the card's memory bandwidth, the better the card will be in general. It especially helps with AA, HDR and higher screen resolutions.

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

Pixel Rate: Pixel rate is the maximum amount of pixels that the graphics card could possibly record to the local memory in a second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the number of ROPs by the the card's clock speed. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel output rate also depends on quite a few other factors, especially the memory bandwidth - the lower the bandwidth is, the lower the potential to reach the maximum fill rate.

Display Prices

Hide Prices

GeForce GTS 250 1GB

Amazon.com

Check prices at:

GeForce GTX 650 Ti 2GB

Amazon.com

Check prices at:

Please note that the price comparisons are based on search keywords - sometimes it might show cards with very similar names that are not exactly the same as the one chosen in the comparison. We do try to filter out the wrong results as best we can, though.

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