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GeForce GTS 250 512MB vs Radeon HD 7850

Intro

The GeForce GTS 250 512MB comes with core clock speeds of 738 MHz on the GPU, and 1100 MHz on the 512 MB of GDDR3 memory. It features 128 SPUs along with 64 Texture Address Units and 16 Rasterization Operator Units.

Compare those specs to the Radeon HD 7850, which has GPU core speed of 860 MHz, and 2048 MB of GDDR5 RAM set to run at 1200 MHz through a 256-bit bus. It also features 1024 SPUs, 64 TAUs, and 32 Raster Operation Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 7850 130 Watts
GeForce GTS 250 512MB 145 Watts
Difference: 15 Watts (12%)

Memory Bandwidth

The Radeon HD 7850, in theory, should perform much faster than the GeForce GTS 250 512MB overall. (explain)

Radeon HD 7850 153600 MB/sec
GeForce GTS 250 512MB 70400 MB/sec
Difference: 83200 (118%)

Texel Rate

The Radeon HD 7850 should be just a bit (more or less 17%) faster with regards to anisotropic filtering than the GeForce GTS 250 512MB. (explain)

Radeon HD 7850 55040 Mtexels/sec
GeForce GTS 250 512MB 47232 Mtexels/sec
Difference: 7808 (17%)

Pixel Rate

The Radeon HD 7850 is a lot (more or less 133%) better at full screen anti-aliasing than the GeForce GTS 250 512MB, and should be able to handle higher screen resolutions while still performing well. (explain)

Radeon HD 7850 27520 Mpixels/sec
GeForce GTS 250 512MB 11808 Mpixels/sec
Difference: 15712 (133%)

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:

Radeon HD 7850

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 Radeon HD 7850
Manufacturer nVidia AMD
Year March 3, 2009 March 2012
Code Name G92a/b Pitcairn Pro
Memory 512 MB 2048 MB
Core Speed 738 MHz 860 MHz
Memory Speed 2200 MHz 4800 MHz
Power (Max TDP) 145 watts 130 watts
Bandwidth 70400 MB/sec 153600 MB/sec
Texel Rate 47232 Mtexels/sec 55040 Mtexels/sec
Pixel Rate 11808 Mpixels/sec 27520 Mpixels/sec
Unified Shaders 128 1024
Texture Mapping Units 64 64
Render Output Units 16 32
Bus Type GDDR3 GDDR5
Bus Width 256-bit 256-bit
Fab Process 65/55 nm 28 nm
Transistors 754 million 2800 million
Bus PCIe x16 2.0 PCIe 3.0 x16
DirectX Version DirectX 10 DirectX 11.1
OpenGL Version OpenGL 3.1 OpenGL 4.2

Memory Bandwidth: Bandwidth is the largest amount of information (counted in MB per second) that can be transferred over the external memory interface within a second. The number is worked out by multiplying the card's bus width by its memory speed. In the case of DDR type memory, it should be multiplied by 2 once again. If it uses DDR5, multiply by 4 instead. The better the memory bandwidth, the faster the card will be in general. It especially helps with AA, HDR and higher screen resolutions.

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

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

Display Prices

Hide Prices

GeForce GTS 250 512MB

Amazon.com

Check prices at:

Radeon HD 7850

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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