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GeForce GTS 250 512MB vs GeForce GTX 650 Ti 2GB

Intro

The GeForce GTS 250 512MB makes use of a 65/55 nm design. nVidia has clocked the core frequency at 738 MHz. The GDDR3 RAM works at a frequency of 1100 MHz on this particular card. It features 128 SPUs along with 64 Texture Address Units and 16 ROPs.

Compare all that to the GeForce GTX 650 Ti 2GB, which features clock speeds of 928 MHz on the GPU, and 1350 MHz on the 2048 MB of GDDR5 memory. It features 768 SPUs along with 64 Texture Address Units and 16 ROPs.

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 650 Ti 2GB 110 Watts
GeForce GTS 250 512MB 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 512MB in general, because of its greater data rate. (explain)

GeForce GTX 650 Ti 2GB 86400 MB/sec
GeForce GTS 250 512MB 70400 MB/sec
Difference: 16000 (23%)

Texel Rate

The GeForce GTX 650 Ti 2GB should be much (approximately 26%) better at anisotropic filtering than the GeForce GTS 250 512MB. (explain)

GeForce GTX 650 Ti 2GB 59392 Mtexels/sec
GeForce GTS 250 512MB 47232 Mtexels/sec
Difference: 12160 (26%)

Pixel Rate

If running with lots of anti-aliasing is important to you, then the GeForce GTX 650 Ti 2GB is a better choice, by far. (explain)

GeForce GTX 650 Ti 2GB 14848 Mpixels/sec
GeForce GTS 250 512MB 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 512MB

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 512MB GeForce GTX 650 Ti 2GB
Manufacturer nVidia nVidia
Year March 3, 2009 October 2012
Code Name G92a/b GK106
Memory 512 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: Bandwidth is the maximum amount of data (measured in MB per second) that can be transferred over the external memory interface within a second. It's worked out by multiplying the card's bus width by its memory speed. If the card has DDR memory, it must be multiplied by 2 again. If DDR5, multiply by 4 instead. The higher the memory bandwidth, the faster the card will be in general. It especially helps with anti-aliasing, HDR and high resolutions.

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

Pixel Rate: Pixel rate is the maximum number of pixels that the graphics chip can possibly write to its local memory per second - measured in millions of pixels per second. The number is calculated by multiplying the amount of colour ROPs by the clock speed of the card. ROPs (Raster Operations Pipelines - also 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 of the card - the lower the memory bandwidth is, the lower the ability to get to the max fill rate.

Display Prices

Hide Prices

GeForce GTS 250 512MB

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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