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GeForce GT 315 vs GeForce GT 430 1GB

Intro

The GeForce GT 315 uses a 40 nm design. nVidia has clocked the core speed at 625 MHz. The DDR3 memory works at a frequency of 790 MHz on this model. It features 48 SPUs along with 16 TAUs and 8 ROPs.

Compare those specifications to the GeForce GT 430 1GB, which makes use of a 40 nm design. nVidia has set the core speed at 700 MHz. The GDDR3 RAM runs at a frequency of 900 MHz on this card. It features 96 SPUs as well as 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 1GB 60 Watts
Difference: 8 Watts (15%)

Memory Bandwidth

Performance-wise, the GeForce GT 430 1GB should in theory be a little bit superior to the GeForce GT 315 overall. (explain)

GeForce GT 430 1GB 28800 MB/sec
GeForce GT 315 25280 MB/sec
Difference: 3520 (14%)

Texel Rate

The GeForce GT 430 1GB is a little bit (about 12%) faster with regards to AF than the GeForce GT 315. (explain)

GeForce GT 430 1GB 11200 Mtexels/sec
GeForce GT 315 10000 Mtexels/sec
Difference: 1200 (12%)

Pixel Rate

The GeForce GT 315 should be a lot (about 79%) better at full screen anti-aliasing than the GeForce GT 430 1GB, and should be able to handle higher screen resolutions better. (explain)

GeForce GT 315 5000 Mpixels/sec
GeForce GT 430 1GB 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

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GeForce GT 430 1GB

Amazon.com

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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 1GB
Manufacturer nVidia nVidia
Year November 2009 October 2010
Code Name GT216 GF108
Memory 512 MB 1024 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: Memory bandwidth is the maximum amount of data (measured in megabytes per second) that can be transferred past the external memory interface in a second. The number is calculated by multiplying the card's interface width by its memory speed. If it uses DDR type memory, the result should 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, HDR and higher screen resolutions.

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

Display Prices

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GeForce GT 315

Amazon.com

Check prices at:

GeForce GT 430 1GB

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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