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GeForce 9800 GT 1GB vs Radeon HD 3850 X2

Intro

The GeForce 9800 GT 1GB uses a 65/55 nm design. nVidia has set the core frequency at 600 MHz. The GDDR3 memory is set to run at a speed of 900 MHz on this model. It features 112 SPUs as well as 56 Texture Address Units and 16 Rasterization Operator Units.

Compare those specifications to the Radeon HD 3850 X2, which comes with core speeds of 668 MHz on the GPU, and 828 MHz on the 512 MB of GDDR3 RAM. 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 theoretically be quite a bit better than the GeForce 9800 GT 1GB overall. (explain)

Radeon HD 3850 X2 105984 MB/sec
GeForce 9800 GT 1GB 57600 MB/sec
Difference: 48384 (84%)

Texel Rate

The GeForce 9800 GT 1GB is quite a bit (approximately 57%) better at texture filtering than the Radeon HD 3850 X2. (explain)

GeForce 9800 GT 1GB 33600 Mtexels/sec
Radeon HD 3850 X2 21376 Mtexels/sec
Difference: 12224 (57%)

Pixel Rate

If using high levels of AA is important to you, then the Radeon HD 3850 X2 is superior to the GeForce 9800 GT 1GB, and very much so. (explain)

Radeon HD 3850 X2 21376 Mpixels/sec
GeForce 9800 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 9800 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 9800 GT 1GB Radeon HD 3850 X2
Manufacturer nVidia AMD
Year July 2008 Apr 4, 2008
Code Name G92a/b 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 65/55 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 max amount of data (in units of MB per second) that can be transported past the external memory interface in one second. The number is calculated by multiplying the bus width by the speed of its memory. If the card has DDR memory, it must be multiplied by 2 again. If it uses 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, HDR and high resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that can be processed per second. This figure is calculated by multiplying the total texture units 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 maximum amount of pixels the video card can possibly record to its local memory per second - measured in millions of pixels per second. The number is worked out by multiplying the number of colour ROPs by the the core 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 quite a few other factors, especially the memory bandwidth of the card - the lower the memory bandwidth is, the lower the ability to get to the maximum fill rate.

Display Prices

Hide Prices

GeForce 9800 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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