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GeForce GT 315 vs GeForce GT 430

Intro

The GeForce GT 315 has core speeds of 625 MHz on the GPU, and 790 MHz on the 512 MB of DDR3 memory. It features 48 SPUs along with 16 TAUs and 8 Rasterization Operator Units.

Compare those specs to the GeForce GT 430, which uses a 40 nm design. nVidia has set the core speed at 700 MHz. The GDDR3 RAM is set to run at a speed of 900 MHz on this particular model. It features 96 SPUs along with 16 Texture Address Units and 4 ROPs.

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GT 315 52 Watts
GeForce GT 430 60 Watts
Difference: 8 Watts (15%)

Memory Bandwidth

Theoretically, the GeForce GT 430 should be a bit faster than the GeForce GT 315 overall. (explain)

GeForce GT 430 28800 MB/sec
GeForce GT 315 25280 MB/sec
Difference: 3520 (14%)

Texel Rate

The GeForce GT 430 is a little bit (approximately 12%) better at AF than the GeForce GT 315. (explain)

GeForce GT 430 11200 Mtexels/sec
GeForce GT 315 10000 Mtexels/sec
Difference: 1200 (12%)

Pixel Rate

If using a high screen resolution is important to you, then the GeForce GT 315 is a better choice, and very much so. (explain)

GeForce GT 315 5000 Mpixels/sec
GeForce GT 430 2800 Mpixels/sec
Difference: 2200 (79%)

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:

GeForce GT 430

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 GeForce GT 430
Manufacturer nVidia nVidia
Year November 2009 October 2010
Code Name GT216 GF108
Memory 512 MB 512 MB
Core Speed 625 MHz 700 MHz
Memory Speed 1580 MHz 1800 MHz
Power (Max TDP) 52 watts 60 watts
Bandwidth 25280 MB/sec 28800 MB/sec
Texel Rate 10000 Mtexels/sec 11200 Mtexels/sec
Pixel Rate 5000 Mpixels/sec 2800 Mpixels/sec
Unified Shaders 48 96
Texture Mapping Units 16 16
Render Output Units 8 4
Bus Type DDR3 GDDR3
Bus Width 128-bit 128-bit
Fab Process 40 nm 40 nm
Transistors 486 million 585 million
Bus PCIe 2.0 PCIe x16
DirectX Version DirectX 10.1 DirectX 11
OpenGL Version OpenGL 3.2 OpenGL 4.1

Memory Bandwidth: Bandwidth is the largest amount of information (in units of MB per second) that can be transferred across the external memory interface in a second. It's worked out by multiplying the bus width by the speed of its memory. In the case of DDR type memory, it must be multiplied by 2 again. If it uses DDR5, multiply by ANOTHER 2x. The better the memory bandwidth, the faster the card will be in general. It especially helps with AA, High Dynamic Range and high resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that can be processed per second. This is calculated by multiplying the total amount of texture units of the card by the core clock speed of the chip. The better this number, the better the card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels per second.

Pixel Rate: Pixel rate is the most pixels that the graphics card can possibly write to its local memory per second - measured in millions of pixels per second. The figure is worked out by multiplying the amount of ROPs by the the card's clock speed. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel fill rate is also dependant on lots of other factors, most notably the memory bandwidth of the card - the lower the bandwidth is, the lower the potential to reach the maximum fill rate.

Display Prices

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GeForce GT 315

Amazon.com

Check prices at:

GeForce GT 430

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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