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GeForce 9800 GTX vs Radeon HD 3470 256MB

Intro

The GeForce 9800 GTX comes with core speeds of 675 MHz on the GPU, and 1100 MHz on the 512 MB of GDDR3 memory. It features 128 SPUs along with 64 TAUs and 16 ROPs.

Compare all of that to the Radeon HD 3470 256MB, which uses a 55 nm design. AMD has clocked the core frequency at 800 MHz. The DDR2 memory is set to run at a frequency of 950 MHz on this card. It features 40(8x5) SPUs as well as 4 Texture Address Units and 4 ROPs.

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Power Usage and Theoretical Benchmarks

Memory Bandwidth

Theoretically speaking, the GeForce 9800 GTX will be 132% faster than the Radeon HD 3470 256MB overall, due to its greater data rate. (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 a lot (about 1250%) better at 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 should be a lot (approximately 238%) better at FSAA than the Radeon HD 3470 256MB, and also will be capable of handling higher screen resolutions better. (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: Bandwidth is the maximum amount of information (counted in megabytes per second) that can be moved across the external memory interface in one second. It's calculated by multiplying the bus width by the speed of its memory. In the case of DDR RAM, it should be multiplied by 2 once again. If it uses DDR5, multiply by ANOTHER 2x. The better the bandwidth is, the faster the card will be in general. It especially helps with AA, HDR and higher screen resolutions.

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

Pixel Rate: Pixel rate is the maximum number of pixels that the graphics card could possibly record to its local memory in a second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the amount of Render Output Units by the clock speed of the card. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel fill rate also depends on many other factors, most notably the memory bandwidth of the card - the lower the 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 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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