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GeForce 9800 GT 1GB vs Radeon HD 3850 X2

Intro

The GeForce 9800 GT 1GB comes with a clock frequency of 600 MHz and a GDDR3 memory frequency of 900 MHz. It also features a 256-bit bus, and uses a 65/55 nm design. It is made up of 112 SPUs, 56 TAUs, and 16 Raster Operation Units.

Compare those specifications to the Radeon HD 3850 X2, which has a clock frequency of 668 MHz and a GDDR3 memory speed of 828 MHz. It also uses a 256-bit memory bus, and uses a 55 nm design. It is comprised of 320(64x5) SPUs, 16 Texture Address Units, and 16 ROPs.

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Power Usage and Theoretical Benchmarks

Memory Bandwidth

The Radeon HD 3850 X2, in theory, should perform a lot faster than the GeForce 9800 GT 1GB in general. (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 much (approximately 57%) better at anisotropic 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

The Radeon HD 3850 X2 will be quite a bit (approximately 123%) more effective at full screen anti-aliasing than the GeForce 9800 GT 1GB, and will be capable of handling higher screen resolutions better. (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: Bandwidth is the maximum amount of data (measured in megabytes per second) that can be transferred over the external memory interface in one second. The number is calculated by multiplying the card's bus width by its memory clock speed. If the card has DDR memory, it must be multiplied by 2 again. If DDR5, multiply by 4 instead. The higher the bandwidth is, the faster the card will be in general. It especially helps with AA, High Dynamic Range and higher screen resolutions.

Texel Rate: Texel rate is the maximum number of texture map elements (texels) that are processed in one second. This figure is worked out by multiplying the total number of texture units of the card by the core clock speed of the chip. The higher the texel rate, the better the graphics card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed in a second.

Pixel Rate: Pixel rate is the most pixels the video card can possibly write to its local memory in a second - measured in millions of pixels per second. The figure is worked out by multiplying the number of colour ROPs by the clock speed of the card. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel fill rate also depends on lots of other factors, most notably the memory bandwidth of the card - the lower the bandwidth is, the lower the ability to reach 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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