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GeForce GT 340 vs Radeon HD 3650 512MB

Intro

The GeForce GT 340 comes with a GPU clock speed of 550 MHz, and the 512 MB of GDDR5 RAM runs at 850 MHz through a 128-bit bus. It also is comprised of 96 SPUs, 32 TAUs, and 8 ROPs.

Compare that to the Radeon HD 3650 512MB, which uses 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 particular card. It features 120(24x5) SPUs as well as 8 Texture Address Units and 4 ROPs.

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GT 340 69 Watts
Radeon HD 3650 512MB 78 Watts
Difference: 9 Watts (13%)

Memory Bandwidth

In theory, the GeForce GT 340 is 113% quicker than the Radeon HD 3650 512MB in general, because of its greater data rate. (explain)

GeForce GT 340 54400 MB/sec
Radeon HD 3650 512MB 25600 MB/sec
Difference: 28800 (113%)

Texel Rate

The GeForce GT 340 is a lot (more or less 203%) better at anisotropic filtering than the Radeon HD 3650 512MB. (explain)

GeForce GT 340 17600 Mtexels/sec
Radeon HD 3650 512MB 5800 Mtexels/sec
Difference: 11800 (203%)

Pixel Rate

The GeForce GT 340 should be much (approximately 52%) better at full screen anti-aliasing than the Radeon HD 3650 512MB, and should be capable of handling higher resolutions better. (explain)

GeForce GT 340 4400 Mpixels/sec
Radeon HD 3650 512MB 2900 Mpixels/sec
Difference: 1500 (52%)

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 GT 340

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 GeForce GT 340 Radeon HD 3650 512MB
Manufacturer nVidia AMD
Year February 2010 2008
Code Name GT215 RV635 PRO
Memory 512 MB 512 MB
Core Speed 550 MHz 725 MHz
Memory Speed 3400 MHz 1600 MHz
Power (Max TDP) 69 watts 78 watts
Bandwidth 54400 MB/sec 25600 MB/sec
Texel Rate 17600 Mtexels/sec 5800 Mtexels/sec
Pixel Rate 4400 Mpixels/sec 2900 Mpixels/sec
Unified Shaders 96 120(24x5)
Texture Mapping Units 32 8
Render Output Units 8 4
Bus Type GDDR5 GDDR3
Bus Width 128-bit 128-bit
Fab Process 40 nm 55 nm
Transistors 727 million (Unknown) million
Bus PCIe x16 PCIe 2.0 x16/AGP 8x
DirectX Version DirectX 10.1 DirectX 10.1
OpenGL Version OpenGL 3.3 OpenGL 3.0

Memory Bandwidth: Bandwidth is the largest amount of data (measured in MB per second) that can be moved over the external memory interface within a second. It's calculated by multiplying the bus width by its memory speed. If it uses DDR type memory, it should be multiplied by 2 once again. If DDR5, multiply by ANOTHER 2x. The higher the bandwidth is, the better the card will be in general. It especially helps with anti-aliasing, HDR and higher screen resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that are processed per second. This is calculated by multiplying the total amount of texture units of the card by the core speed of the chip. The higher this number, the better the card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels in a 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. The number is worked out by multiplying the number of Render Output Units by the the core speed of the card. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel output rate is also dependant on quite a few other factors, most notably the memory bandwidth - the lower the bandwidth is, the lower the ability to reach the maximum fill rate.

Display Prices

Hide Prices

GeForce GT 340

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.

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