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GeForce 9800 GTX+ vs Radeon HD 4850 1GB

Intro

The GeForce 9800 GTX+ comes with a GPU core speed of 738 MHz, and the 512 MB of GDDR3 memory is set to run at 1100 MHz through a 256-bit bus. It also is comprised of 128 SPUs, 64 TAUs, and 16 ROPs.

Compare those specs to the Radeon HD 4850 1GB, which comes with a core clock speed of 625 MHz and a GDDR4 memory speed of 993 MHz. It also features a 256-bit memory bus, and makes use of a 55 nm design. It is made up of 800(160x5) SPUs, 40 TAUs, and 16 Raster Operation Units.

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 4850 1GB 110 Watts
GeForce 9800 GTX+ 145 Watts
Difference: 35 Watts (32%)

Memory Bandwidth

The GeForce 9800 GTX+ should theoretically perform a small bit faster than the Radeon HD 4850 1GB overall. (explain)

GeForce 9800 GTX+ 70400 MB/sec
Radeon HD 4850 1GB 63552 MB/sec
Difference: 6848 (11%)

Texel Rate

The GeForce 9800 GTX+ is much (about 89%) better at anisotropic filtering than the Radeon HD 4850 1GB. (explain)

GeForce 9800 GTX+ 47232 Mtexels/sec
Radeon HD 4850 1GB 25000 Mtexels/sec
Difference: 22232 (89%)

Pixel Rate

If using a high resolution is important to you, then the GeForce 9800 GTX+ is a better choice, but not by far. (explain)

GeForce 9800 GTX+ 11808 Mpixels/sec
Radeon HD 4850 1GB 10000 Mpixels/sec
Difference: 1808 (18%)

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 9800 GTX+

Amazon.com

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Radeon HD 4850 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 9800 GTX+ Radeon HD 4850 1GB
Manufacturer nVidia AMD
Year July 2008 Jun 25, 2008
Code Name G92b RV770 PRO
Memory 512 MB 1024 MB
Core Speed 738 MHz 625 MHz
Memory Speed 2200 MHz 1986 MHz
Power (Max TDP) 145 watts 110 watts
Bandwidth 70400 MB/sec 63552 MB/sec
Texel Rate 47232 Mtexels/sec 25000 Mtexels/sec
Pixel Rate 11808 Mpixels/sec 10000 Mpixels/sec
Unified Shaders 128 800(160x5)
Texture Mapping Units 64 40
Render Output Units 16 16
Bus Type GDDR3 GDDR4
Bus Width 256-bit 256-bit
Fab Process 55 nm 55 nm
Transistors 754 million 956 million
Bus PCIe x16 2.0 PCIe 2.0 x16
DirectX Version DirectX 10 DirectX 10.1
OpenGL Version OpenGL 3.0 OpenGL 3.0

Memory Bandwidth: Memory bandwidth is the largest amount of data (counted in megabytes per second) that can be moved over the external memory interface within a second. It is worked out by multiplying the bus width by the speed of its memory. If it uses DDR RAM, the result should be multiplied by 2 once again. If DDR5, multiply by ANOTHER 2x. The better the 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 are processed in one second. This is calculated by multiplying the total texture units of the card by the core speed of the chip. The higher this number, the better the graphics card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels per second.

Pixel Rate: Pixel rate is the most pixels that the graphics chip could possibly record to its local memory in a second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the amount of colour ROPs by the the card's clock speed. 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 quite a few 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

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GeForce 9800 GTX+

Amazon.com

Check prices at:

Radeon HD 4850 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.

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