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Radeon HD 3470 512MB vs Radeon HD 3650 512MB

Intro

The Radeon HD 3470 512MB has a core clock frequency of 800 MHz and a GDDR3 memory speed of 950 MHz. It also uses a 128-bit memory bus, and uses a 55 nm design. It features 40(8x5) SPUs, 4 Texture Address Units, and 4 ROPs.

Compare that to the Radeon HD 3650 512MB, which makes use of a 55 nm design. AMD has clocked the core frequency at 725 MHz. The GDDR3 RAM runs at a speed of 800 MHz on this card. It features 120(24x5) SPUs as well as 8 Texture Address Units and 4 Rasterization Operator Units.

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Power Usage and Theoretical Benchmarks

Memory Bandwidth

In theory, the Radeon HD 3470 512MB should perform just a bit faster than the Radeon HD 3650 512MB in general. (explain)

Radeon HD 3470 512MB 30400 MB/sec
Radeon HD 3650 512MB 25600 MB/sec
Difference: 4800 (19%)

Texel Rate

The Radeon HD 3650 512MB is quite a bit (approximately 81%) better at AF than the Radeon HD 3470 512MB. (explain)

Radeon HD 3650 512MB 5800 Mtexels/sec
Radeon HD 3470 512MB 3200 Mtexels/sec
Difference: 2600 (81%)

Pixel Rate

If using a high screen resolution is important to you, then the Radeon HD 3470 512MB is a better choice, but it probably won't make a huge difference. (explain)

Radeon HD 3470 512MB 3200 Mpixels/sec
Radeon HD 3650 512MB 2900 Mpixels/sec
Difference: 300 (10%)

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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Radeon HD 3470 512MB

Amazon.com

Check prices at:

Radeon HD 3650 512MB

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 Radeon HD 3470 512MB Radeon HD 3650 512MB
Manufacturer AMD AMD
Year 2008 2008
Code Name RV620 PRO RV635 PRO
Memory 512 MB 512 MB
Core Speed 800 MHz 725 MHz
Memory Speed 1900 MHz 1600 MHz
Power (Max TDP) (Unknown) watts 78 watts
Bandwidth 30400 MB/sec 25600 MB/sec
Texel Rate 3200 Mtexels/sec 5800 Mtexels/sec
Pixel Rate 3200 Mpixels/sec 2900 Mpixels/sec
Unified Shaders 40(8x5) 120(24x5)
Texture Mapping Units 4 8
Render Output Units 4 4
Bus Type GDDR3 GDDR3
Bus Width 128-bit 128-bit
Fab Process 55 nm 55 nm
Transistors (Unknown) million (Unknown) million
Bus PCIe 2.0 x16 PCIe 2.0 x16/AGP 8x
DirectX Version DirectX 10.1 DirectX 10.1
OpenGL Version OpenGL 3.0 OpenGL 3.0

Memory Bandwidth: Memory bandwidth is the largest amount of data (measured in megabytes per second) that can be transferred across the external memory interface in a second. It is worked out by multiplying the bus width by the speed of its memory. If it uses DDR type RAM, it should be multiplied by 2 once again. If DDR5, multiply by ANOTHER 2x. The better the bandwidth is, the faster the card will be in general. It especially helps with anti-aliasing, High Dynamic Range and high resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that are processed per second. This figure is worked out by multiplying the total amount of texture units by the core speed of the chip. The higher this number, the better the 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 most pixels the graphics card could possibly write to the local memory in a second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the amount of ROPs by the the core clock speed. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel output rate is also dependant on lots of other factors, especially the memory bandwidth - the lower the memory bandwidth is, the lower the ability to reach the max fill rate.

Display Prices

Hide Prices

Radeon HD 3470 512MB

Amazon.com

Check prices at:

Radeon HD 3650 512MB

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.

Comments

One Response to “Radeon HD 3470 512MB vs Radeon HD 3650 512MB”
Hd3470 benchmark | Jbmobilenotary says:

[...] Radeon HD 3470 512MB vs Radeon HD 3650 512MB …Power Usage and Theoretical Benchmarks. Memory Bandwidth. Theoretically speaking, the Radeon HD 3470 512MB should perform a small bit faster than the … [...]

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