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GeForce 9800 GTX vs Radeon HD 3470 256MB

Intro

The GeForce 9800 GTX has a clock frequency of 675 MHz and a GDDR3 memory frequency of 1100 MHz. It also makes use of a 256-bit memory bus, and uses a 65 nm design. It features 128 SPUs, 64 TAUs, and 16 ROPs.

Compare that to the Radeon HD 3470 256MB, which makes use of a 55 nm design. AMD has clocked the core frequency at 800 MHz. The DDR2 RAM works at a speed of 950 MHz on this model. It features 40(8x5) SPUs along with 4 Texture Address Units and 4 Rasterization Operator Units.

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Power Usage and Theoretical Benchmarks

Memory Bandwidth

As far as performance goes, the GeForce 9800 GTX should theoretically be quite a bit superior to the Radeon HD 3470 256MB in general. (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 quite a bit (about 1250%) faster with regards to AF 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 a lot (more or less 238%) faster with regards to full screen anti-aliasing than the Radeon HD 3470 256MB, and should be able to handle higher screen resolutions without slowing down too much. (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

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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 maximum amount of data (in units of megabytes per second) that can be transferred over the external memory interface in one second. The number is worked out by multiplying the interface width by its memory speed. If it uses DDR type RAM, it must be multiplied by 2 again. If DDR5, multiply by 4 instead. The better the 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 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 better the texel rate, the better the graphics card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied per second.

Pixel Rate: Pixel rate is the maximum amount of pixels the graphics card could possibly record to its local memory in one second - measured in millions of pixels per second. The number is worked out by multiplying the amount of Render Output Units by the the core speed of the card. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for drawing the pixels (image) on 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 potential to reach 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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