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GeForce GTS 250 1GB vs Radeon HD 3870 1GB

Intro

The GeForce GTS 250 1GB has a GPU core speed of 738 MHz, and the 1024 MB of GDDR3 memory runs at 1100 MHz through a 256-bit bus. It also is comprised of 128 Stream Processors, 64 TAUs, and 16 Raster Operation Units.

Compare all of that to the Radeon HD 3870 1GB, which has a clock frequency of 775 MHz and a GDDR4 memory frequency of 1125 MHz. It also makes use of a 256-bit memory bus, and makes use of a 55 nm design. It is comprised of 320(64x5) SPUs, 16 TAUs, and 16 Raster Operation Units.

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 3870 1GB 106 Watts
GeForce GTS 250 1GB 145 Watts
Difference: 39 Watts (37%)

Memory Bandwidth

The Radeon HD 3870 1GB should theoretically perform a little bit faster than the GeForce GTS 250 1GB in general. (explain)

Radeon HD 3870 1GB 72000 MB/sec
GeForce GTS 250 1GB 70400 MB/sec
Difference: 1600 (2%)

Texel Rate

The GeForce GTS 250 1GB should be quite a bit (about 281%) better at AF than the Radeon HD 3870 1GB. (explain)

GeForce GTS 250 1GB 47232 Mtexels/sec
Radeon HD 3870 1GB 12400 Mtexels/sec
Difference: 34832 (281%)

Pixel Rate

The Radeon HD 3870 1GB will be a little bit (about 5%) faster with regards to full screen anti-aliasing than the GeForce GTS 250 1GB, and also should be able to handle higher resolutions without slowing down too much. (explain)

Radeon HD 3870 1GB 12400 Mpixels/sec
GeForce GTS 250 1GB 11808 Mpixels/sec
Difference: 592 (5%)

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:

Radeon HD 3870 1GB

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 Radeon HD 3870 1GB
Manufacturer nVidia AMD
Year March 3, 2009 Nov 19, 2007
Code Name G92a/b RV670 XT
Memory 1024 MB 1024 MB
Core Speed 738 MHz 775 MHz
Memory Speed 2200 MHz 2250 MHz
Power (Max TDP) 145 watts 106 watts
Bandwidth 70400 MB/sec 72000 MB/sec
Texel Rate 47232 Mtexels/sec 12400 Mtexels/sec
Pixel Rate 11808 Mpixels/sec 12400 Mpixels/sec
Unified Shaders 128 320(64x5)
Texture Mapping Units 64 16
Render Output Units 16 16
Bus Type GDDR3 GDDR4
Bus Width 256-bit 256-bit
Fab Process 65/55 nm 55 nm
Transistors 754 million (Unknown) million
Bus PCIe x16 2.0 PCIe 2.0 x16/AGP 8x
DirectX Version DirectX 10 DirectX 10.1
OpenGL Version OpenGL 3.1 OpenGL 3.0

Memory Bandwidth: Bandwidth is the max amount of information (in units of MB per second) that can be transferred across the external memory interface within a second. It is worked out by multiplying the card's interface width by its memory clock speed. If it uses DDR type memory, the result should be multiplied by 2 again. If DDR5, multiply by 4 instead. The higher the memory bandwidth, the better the card will be in general. It especially helps with anti-aliasing, HDR and higher screen resolutions.

Texel Rate: Texel rate is the maximum number of texture map elements (texels) that can be applied in one second. This figure is calculated by multiplying the total number of texture units of the card by the core clock 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 in a second.

Pixel Rate: Pixel rate is the most pixels that the graphics chip could possibly record to its local memory per second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the amount of Render Output Units by the the core speed of the card. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel output rate also depends on lots of other factors, most notably the memory bandwidth - the lower the bandwidth is, the lower the ability to get to the maximum fill rate.

Display Prices

Hide Prices

GeForce GTS 250 1GB

Amazon.com

Check prices at:

Radeon HD 3870 1GB

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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