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GeForce GT 340 1GB vs Radeon HD 3650 512MB

Intro

The GeForce GT 340 1GB has a GPU clock speed of 550 MHz, and the 1024 MB of GDDR5 memory is set to run at 850 MHz through a 128-bit bus. It also features 96 SPUs, 32 TAUs, and 8 Raster Operation Units.

Compare those specifications to the Radeon HD 3650 512MB, which makes use of a 55 nm design. AMD has set the core speed at 725 MHz. The GDDR3 RAM runs at a frequency 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 1GB 69 Watts
Radeon HD 3650 512MB 78 Watts
Difference: 9 Watts (13%)

Memory Bandwidth

Theoretically speaking, the GeForce GT 340 1GB should perform quite a bit faster than the Radeon HD 3650 512MB overall. (explain)

GeForce GT 340 1GB 54400 MB/sec
Radeon HD 3650 512MB 25600 MB/sec
Difference: 28800 (113%)

Texel Rate

The GeForce GT 340 1GB should be quite a bit (approximately 203%) faster with regards to texture filtering than the Radeon HD 3650 512MB. (explain)

GeForce GT 340 1GB 17600 Mtexels/sec
Radeon HD 3650 512MB 5800 Mtexels/sec
Difference: 11800 (203%)

Pixel Rate

If using high levels of AA is important to you, then the GeForce GT 340 1GB is a better choice, by far. (explain)

GeForce GT 340 1GB 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 1GB

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 1GB Radeon HD 3650 512MB
Manufacturer nVidia AMD
Year February 2010 2008
Code Name GT215 RV635 PRO
Memory 1024 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: Memory bandwidth is the max amount of data (in units of MB per second) that can be moved over the external memory interface in a second. It's worked out by multiplying the card's bus width by its memory speed. In the case of DDR RAM, the result should be multiplied by 2 once again. If it uses DDR5, multiply by ANOTHER 2x. The higher 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 number of texture map elements (texels) that can be processed in one second. This is worked out by multiplying the total texture units by the core 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 processed in a second.

Pixel Rate: Pixel rate is the most pixels that the graphics card could possibly write to the local memory in a second - measured in millions of pixels per second. The figure is calculated by multiplying the number of Render Output Units by the clock speed of the card. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel fill rate is also dependant on many other factors, most notably the memory bandwidth - the lower the bandwidth is, the lower the potential to get to the max fill rate.

Display Prices

Hide Prices

GeForce GT 340 1GB

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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