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GeForce 9800 GTX vs Radeon HD 3470 256MB

Intro

The GeForce 9800 GTX uses a 65 nm design. nVidia has set the core speed at 675 MHz. The GDDR3 memory is set to run at a frequency of 1100 MHz on this particular model. It features 128 SPUs as well as 64 Texture Address Units and 16 ROPs.

Compare those specs to the Radeon HD 3470 256MB, which uses a 55 nm design. AMD has set the core speed at 800 MHz. The DDR2 RAM runs at a speed of 950 MHz on this specific card. It features 40(8x5) SPUs as well as 4 TAUs and 4 ROPs.

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Power Usage and Theoretical Benchmarks

Memory Bandwidth

In theory, the GeForce 9800 GTX should be 132% faster than the Radeon HD 3470 256MB overall, due to its greater bandwidth. (explain)

GeForce 9800 GTX 70400 MB/sec
Radeon HD 3470 256MB 30400 MB/sec
Difference: 40000 (132%)

Texel Rate

The GeForce 9800 GTX will be much (approximately 1250%) faster with regards to texture filtering than the Radeon HD 3470 256MB. (explain)

GeForce 9800 GTX 43200 Mtexels/sec
Radeon HD 3470 256MB 3200 Mtexels/sec
Difference: 40000 (1250%)

Pixel Rate

The GeForce 9800 GTX is quite a bit (more or less 238%) better at anti-aliasing than the Radeon HD 3470 256MB, and should be able to handle higher resolutions while still performing well. (explain)

GeForce 9800 GTX 10800 Mpixels/sec
Radeon HD 3470 256MB 3200 Mpixels/sec
Difference: 7600 (238%)

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

Check prices at:

Radeon HD 3470 256MB

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 3470 256MB
Manufacturer nVidia AMD
Year April 2008 2008
Code Name G92 RV620 PRO
Memory 512 MB 256 MB
Core Speed 675 MHz 800 MHz
Memory Speed 2200 MHz 1900 MHz
Power (Max TDP) 140 watts (Unknown) watts
Bandwidth 70400 MB/sec 30400 MB/sec
Texel Rate 43200 Mtexels/sec 3200 Mtexels/sec
Pixel Rate 10800 Mpixels/sec 3200 Mpixels/sec
Unified Shaders 128 40(8x5)
Texture Mapping Units 64 4
Render Output Units 16 4
Bus Type GDDR3 DDR2
Bus Width 256-bit 128-bit
Fab Process 65 nm 55 nm
Transistors 754 million (Unknown) 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 max amount of information (measured in MB per second) that can be transported past the external memory interface in a second. It's calculated by multiplying the card's bus width by its memory speed. If it uses DDR type RAM, it must be multiplied by 2 again. If DDR5, multiply by ANOTHER 2x. The higher the memory bandwidth, the better 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 texture map elements (texels) that are processed per second. This figure is worked out by multiplying the total amount of texture units of the card by the core clock speed of the chip. The higher the texel rate, the better the video card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied per second.

Pixel Rate: Pixel rate is the maximum number of pixels that the graphics card can possibly record to its local memory per second - measured in millions of pixels per second. The figure is calculated by multiplying the number of ROPs by the the core clock speed. ROPs (Raster Operations Pipelines - aka 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 bandwidth is, the lower the potential to get to the maximum fill rate.

Display Prices

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GeForce 9800 GTX

Amazon.com

Check prices at:

Radeon HD 3470 256MB

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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