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GeForce GT 315 vs Radeon HD 3650 512MB

Intro

The GeForce GT 315 has a clock speed of 625 MHz and a DDR3 memory speed of 790 MHz. It also uses a 128-bit memory bus, and uses a 40 nm design. It is made up of 48 SPUs, 16 Texture Address Units, and 8 Raster Operation Units.

Compare all of that 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 specific card. It features 120(24x5) SPUs as well as 8 TAUs and 4 ROPs.

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GT 315 52 Watts
Radeon HD 3650 512MB 78 Watts
Difference: 26 Watts (50%)

Memory Bandwidth

In theory, the Radeon HD 3650 512MB is 1% quicker than the GeForce GT 315 in general, because of its higher bandwidth. (explain)

Radeon HD 3650 512MB 25600 MB/sec
GeForce GT 315 25280 MB/sec
Difference: 320 (1%)

Texel Rate

The GeForce GT 315 is quite a bit (about 72%) faster with regards to anisotropic filtering than the Radeon HD 3650 512MB. (explain)

GeForce GT 315 10000 Mtexels/sec
Radeon HD 3650 512MB 5800 Mtexels/sec
Difference: 4200 (72%)

Pixel Rate

The GeForce GT 315 is a lot (more or less 72%) more effective at AA than the Radeon HD 3650 512MB, and also will be able to handle higher screen resolutions without losing too much performance. (explain)

GeForce GT 315 5000 Mpixels/sec
Radeon HD 3650 512MB 2900 Mpixels/sec
Difference: 2100 (72%)

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 315

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 315 Radeon HD 3650 512MB
Manufacturer nVidia AMD
Year November 2009 2008
Code Name GT216 RV635 PRO
Memory 512 MB 512 MB
Core Speed 625 MHz 725 MHz
Memory Speed 1580 MHz 1600 MHz
Power (Max TDP) 52 watts 78 watts
Bandwidth 25280 MB/sec 25600 MB/sec
Texel Rate 10000 Mtexels/sec 5800 Mtexels/sec
Pixel Rate 5000 Mpixels/sec 2900 Mpixels/sec
Unified Shaders 48 120(24x5)
Texture Mapping Units 16 8
Render Output Units 8 4
Bus Type DDR3 GDDR3
Bus Width 128-bit 128-bit
Fab Process 40 nm 55 nm
Transistors 486 million (Unknown) million
Bus PCIe 2.0 PCIe 2.0 x16/AGP 8x
DirectX Version DirectX 10.1 DirectX 10.1
OpenGL Version OpenGL 3.2 OpenGL 3.0

Memory Bandwidth: Bandwidth is the max amount of information (counted in megabytes per second) that can be transported over the external memory interface in a second. The number is worked out by multiplying the card's interface width by its memory speed. In the case of DDR memory, it must be multiplied by 2 once again. If it uses DDR5, multiply by ANOTHER 2x. The higher the memory bandwidth, 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 amount of texture map elements (texels) that are applied per second. This number is worked out by multiplying the total number of texture units by the core speed of the chip. The better the texel rate, the better the card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed in one second.

Pixel Rate: Pixel rate is the maximum number of pixels that the graphics card could possibly write to the local memory in one second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the number of Raster Operations Pipelines by the clock speed of the card. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel fill rate also depends on lots of other factors, especially the memory bandwidth of the card - the lower the memory bandwidth is, the lower the potential to reach the max fill rate.

Display Prices

Hide Prices

GeForce GT 315

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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