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GeForce 8800 GT 1GB vs Radeon HD 3850 X2

Intro

The GeForce 8800 GT 1GB comes with a core clock speed of 600 MHz and a GDDR3 memory speed of 900 MHz. It also uses a 256-bit bus, and uses a 65 nm design. It is comprised of 112 SPUs, 56 TAUs, and 16 ROPs.

Compare those specifications to the Radeon HD 3850 X2, which makes use of a 55 nm design. AMD has set the core speed at 668 MHz. The GDDR3 RAM runs at a frequency of 828 MHz on this particular model. It features 320(64x5) SPUs along with 16 TAUs and 16 Rasterization Operator Units.

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Power Usage and Theoretical Benchmarks

Memory Bandwidth

Performance-wise, the Radeon HD 3850 X2 should in theory be quite a bit better than the GeForce 8800 GT 1GB overall. (explain)

Radeon HD 3850 X2 105984 MB/sec
GeForce 8800 GT 1GB 57600 MB/sec
Difference: 48384 (84%)

Texel Rate

The GeForce 8800 GT 1GB is a lot (approximately 57%) better at anisotropic filtering than the Radeon HD 3850 X2. (explain)

GeForce 8800 GT 1GB 33600 Mtexels/sec
Radeon HD 3850 X2 21376 Mtexels/sec
Difference: 12224 (57%)

Pixel Rate

If using a high resolution is important to you, then the Radeon HD 3850 X2 is a better choice, and very much so. (explain)

Radeon HD 3850 X2 21376 Mpixels/sec
GeForce 8800 GT 1GB 9600 Mpixels/sec
Difference: 11776 (123%)

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.

One or more cards in this comparison are multi-core. This means that their bandwidth, texel and pixel rates are theoretically doubled - this does not mean the card will actually perform twice as fast, but only that it should in theory be able to. Actual game benchmarks will give a more accurate idea of what it's capable of.

Price Comparison

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GeForce 8800 GT 1GB

Amazon.com

Check prices at:

Radeon HD 3850 X2

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 8800 GT 1GB Radeon HD 3850 X2
Manufacturer nVidia AMD
Year Dec 2007 Apr 4, 2008
Code Name G92 RV670 PRO
Memory 1024 MB 512 MB (x2)
Core Speed 600 MHz 668 MHz (x2)
Memory Speed 1800 MHz 1656 MHz (x2)
Power (Max TDP) 105 watts (Unknown) watts
Bandwidth 57600 MB/sec 105984 MB/sec
Texel Rate 33600 Mtexels/sec 21376 Mtexels/sec
Pixel Rate 9600 Mpixels/sec 21376 Mpixels/sec
Unified Shaders 112 320(64x5) (x2)
Texture Mapping Units 56 16 (x2)
Render Output Units 16 16 (x2)
Bus Type GDDR3 GDDR3
Bus Width 256-bit 256-bit (x2)
Fab Process 65 nm 55 nm
Transistors 754 million (Unknown) million
Bus PCIe x16 2.0 PCIe 2.0 x16/(internal PCIe 1.1 x16)
DirectX Version DirectX 10 DirectX 10.1
OpenGL Version OpenGL 3.0 OpenGL 3.0

Memory Bandwidth: Memory bandwidth is the maximum amount of data (counted in megabytes per second) that can be moved past the external memory interface in one second. The number is worked out by multiplying the card's bus width by its memory clock speed. If the card has DDR type memory, it should be multiplied by 2 again. If DDR5, multiply by ANOTHER 2x. 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 number of texture map elements (texels) that can be processed in one second. This figure is calculated by multiplying the total amount of texture units by the core speed of the chip. The better this number, the better the card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied in a second.

Pixel Rate: Pixel rate is the most pixels that the graphics card can possibly record to its local memory in a second - measured in millions of pixels per second. The number is worked out by multiplying the amount of Raster Operations Pipelines by the the card's clock speed. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel fill rate is also dependant on many 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 8800 GT 1GB

Amazon.com

Check prices at:

Radeon HD 3850 X2

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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