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GeForce GTS 250 1GB vs Radeon HD 7870

Intro

The GeForce GTS 250 1GB makes use of a 65/55 nm design. nVidia has set the core frequency at 738 MHz. The GDDR3 RAM runs at a frequency of 1100 MHz on this model. It features 128 SPUs as well as 64 Texture Address Units and 16 Rasterization Operator Units.

Compare all that to the Radeon HD 7870, which features a core clock frequency of 1000 MHz and a GDDR5 memory speed of 1200 MHz. It also features a 256-bit bus, and uses a 28 nm design. It is comprised of 1280 SPUs, 80 Texture Address Units, and 32 ROPs.

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTS 250 1GB 145 Watts
Radeon HD 7870 175 Watts
Difference: 30 Watts (21%)

Memory Bandwidth

Theoretically speaking, the Radeon HD 7870 should be 118% quicker than the GeForce GTS 250 1GB overall, because of its higher data rate. (explain)

Radeon HD 7870 153600 MB/sec
GeForce GTS 250 1GB 70400 MB/sec
Difference: 83200 (118%)

Texel Rate

The Radeon HD 7870 should be much (approximately 69%) faster with regards to AF than the GeForce GTS 250 1GB. (explain)

Radeon HD 7870 80000 Mtexels/sec
GeForce GTS 250 1GB 47232 Mtexels/sec
Difference: 32768 (69%)

Pixel Rate

If running with a high resolution is important to you, then the Radeon HD 7870 is the winner, by far. (explain)

Radeon HD 7870 32000 Mpixels/sec
GeForce GTS 250 1GB 11808 Mpixels/sec
Difference: 20192 (171%)

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 7870

Amazon.com

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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 7870
Manufacturer nVidia AMD
Year March 3, 2009 March 2012
Code Name G92a/b Pitcairn XT
Memory 1024 MB 2048 MB
Core Speed 738 MHz 1000 MHz
Memory Speed 2200 MHz 4800 MHz
Power (Max TDP) 145 watts 175 watts
Bandwidth 70400 MB/sec 153600 MB/sec
Texel Rate 47232 Mtexels/sec 80000 Mtexels/sec
Pixel Rate 11808 Mpixels/sec 32000 Mpixels/sec
Unified Shaders 128 1280
Texture Mapping Units 64 80
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 maximum amount of information (measured in megabytes per second) that can be transported across the external memory interface within a second. It is calculated by multiplying the card's interface width by its memory clock speed. If it uses DDR type RAM, it must be multiplied by 2 again. If DDR5, multiply by ANOTHER 2x. The higher 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 can be applied per second. This figure is calculated by multiplying the total texture units of the card by the core speed of the chip. The higher the texel rate, the better the 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 can possibly write to the local memory in one second - measured in millions of pixels per second. The figure is worked out by multiplying the amount of ROPs by the clock 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 is also dependant on lots of other factors, most notably the memory bandwidth - the lower the memory bandwidth is, the lower the potential to reach the max fill rate.

Display Prices

Hide Prices

GeForce GTS 250 1GB

Amazon.com

Check prices at:

Radeon HD 7870

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.

Comments

One Response to “GeForce GTS 250 1GB vs Radeon HD 7870”
Orhan says:

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