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GeForce GTX 260 vs Radeon HD 4870 1GB

Intro

The GeForce GTX 260 features a GPU clock speed of 576 MHz, and the 896 MB of GDDR3 memory runs at 999 MHz through a 448-bit bus. It also features 192 Stream Processors, 64 Texture Address Units, and 28 Raster Operation Units.

Compare all of that to the Radeon HD 4870 1GB, which makes use of a 55 nm design. AMD has clocked the core speed at 750 MHz. The GDDR5 RAM works at a speed of 900 MHz on this model. It features 800(160x5) SPUs along with 40 Texture Address Units and 16 ROPs.

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 4870 1GB 150 Watts
GeForce GTX 260 182 Watts
Difference: 32 Watts (21%)

Memory Bandwidth

The Radeon HD 4870 1GB should theoretically be just a bit faster than the GeForce GTX 260 in general. (explain)

Radeon HD 4870 1GB 115200 MB/sec
GeForce GTX 260 111888 MB/sec
Difference: 3312 (3%)

Texel Rate

The GeForce GTX 260 will be a lot (about 23%) faster with regards to AF than the Radeon HD 4870 1GB. (explain)

GeForce GTX 260 36864 Mtexels/sec
Radeon HD 4870 1GB 30000 Mtexels/sec
Difference: 6864 (23%)

Pixel Rate

The GeForce GTX 260 is quite a bit (approximately 34%) faster with regards to anti-aliasing than the Radeon HD 4870 1GB, and should be capable of handling higher resolutions without slowing down too much. (explain)

GeForce GTX 260 16128 Mpixels/sec
Radeon HD 4870 1GB 12000 Mpixels/sec
Difference: 4128 (34%)

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 GTX 260

Amazon.com

Check prices at:

Radeon HD 4870 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 GTX 260 Radeon HD 4870 1GB
Manufacturer nVidia AMD
Year June 16, 2008 Jun 25, 2008
Code Name G200 RV770 XT
Memory 896 MB 1024 MB
Core Speed 576 MHz 750 MHz
Memory Speed 1998 MHz 3600 MHz
Power (Max TDP) 182 watts 150 watts
Bandwidth 111888 MB/sec 115200 MB/sec
Texel Rate 36864 Mtexels/sec 30000 Mtexels/sec
Pixel Rate 16128 Mpixels/sec 12000 Mpixels/sec
Unified Shaders 192 800(160x5)
Texture Mapping Units 64 40
Render Output Units 28 16
Bus Type GDDR3 GDDR5
Bus Width 448-bit 256-bit
Fab Process 65 nm 55 nm
Transistors 1400 million 956 million
Bus PCIe x16 2.0 PCIe 2.0 x16
DirectX Version DirectX 10 DirectX 10.1
OpenGL Version OpenGL 3.1 OpenGL 3.0

Memory Bandwidth: Bandwidth is the max amount of information (counted in MB per second) that can be transferred across the external memory interface in one second. It's calculated by multiplying the card's interface width by its memory speed. If it uses DDR memory, it must be multiplied by 2 once again. If it uses DDR5, multiply by ANOTHER 2x. The higher the bandwidth is, the better the card will be in general. It especially helps with anti-aliasing, High Dynamic Range and high resolutions.

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

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

Display Prices

Hide Prices

GeForce GTX 260

Amazon.com

Check prices at:

Radeon HD 4870 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.

Comments

One Response to “GeForce GTX 260 vs Radeon HD 4870 1GB”
[VĂ¢nd] Placa video Sapphire radeon hd 4870 1gb ( e peste nvidia gtx260 ) says:

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