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GeForce GTS 250 1GB vs GeForce GTX 650

Intro

The GeForce GTS 250 1GB comes with a GPU clock speed of 738 MHz, and the 1024 MB of GDDR3 memory runs at 1100 MHz through a 256-bit bus. It also features 128 SPUs, 64 Texture Address Units, and 16 Raster Operation Units.

Compare those specs to the GeForce GTX 650, which comes with a GPU core clock speed of 1058 MHz, and 1024 MB of GDDR5 RAM running at 1250 MHz through a 128-bit bus. It also features 384 SPUs, 32 TAUs, and 16 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 650 64 Watts
GeForce GTS 250 1GB 145 Watts
Difference: 81 Watts (127%)

Memory Bandwidth

As far as performance goes, the GeForce GTX 650 should in theory be just a bit better than the GeForce GTS 250 1GB overall. (explain)

GeForce GTX 650 80000 MB/sec
GeForce GTS 250 1GB 70400 MB/sec
Difference: 9600 (14%)

Texel Rate

The GeForce GTS 250 1GB should be a lot (about 40%) better at anisotropic filtering than the GeForce GTX 650. (explain)

GeForce GTS 250 1GB 47232 Mtexels/sec
GeForce GTX 650 33856 Mtexels/sec
Difference: 13376 (40%)

Pixel Rate

If running with high levels of AA is important to you, then the GeForce GTX 650 is the winner, by a large margin. (explain)

GeForce GTX 650 16928 Mpixels/sec
GeForce GTS 250 1GB 11808 Mpixels/sec
Difference: 5120 (43%)

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

Display Prices

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GeForce GTS 250 1GB

Amazon.com

GeForce GTX 650

Amazon.com

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
Manufacturer nVidia nVidia
Year March 3, 2009 September 2012
Code Name G92a/b GK107
Memory 1024 MB 1024 MB
Core Speed 738 MHz 1058 MHz
Memory Speed 2200 MHz 5000 MHz
Power (Max TDP) 145 watts 64 watts
Bandwidth 70400 MB/sec 80000 MB/sec
Texel Rate 47232 Mtexels/sec 33856 Mtexels/sec
Pixel Rate 11808 Mpixels/sec 16928 Mpixels/sec
Unified Shaders 128 384
Texture Mapping Units 64 32
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 1300 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 information (in units of megabytes per second) that can be transported across the external memory interface in one second. The number is worked out by multiplying the card's interface width by its memory clock speed. If the card has DDR memory, the result should be multiplied by 2 once again. If DDR5, multiply by 4 instead. The better the card's memory bandwidth, the better 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 applied in one second. This number is worked out by multiplying the total texture units of the card by the core speed of the chip. The better this number, the better the card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels per second.

Pixel Rate: Pixel rate is the most pixels that the graphics card can possibly record to its local memory per second - measured in millions of pixels per second. The figure is worked out by multiplying the amount of Render Output Units by the the core clock speed. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel fill rate also depends on many other factors, especially the memory bandwidth of the card - the lower the memory bandwidth is, the lower the potential to get to the maximum fill rate.

Comments

One Response to “GeForce GTS 250 1GB vs GeForce GTX 650”
kneegrow says:

lol@blank prices

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