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GeForce GT 315 vs GeForce GT 450 (OEM)

Intro

The GeForce GT 315 uses a 40 nm design. nVidia has set the core frequency at 625 MHz. The DDR3 memory is set to run at a speed of 790 MHz on this card. It features 48 SPUs along with 16 TAUs and 8 Rasterization Operator Units.

Compare all that to the GeForce GT 450 (OEM), which makes use of a 40 nm design. nVidia has clocked the core frequency at 790 MHz. The GDDR5 memory is set to run at a frequency of 1000 MHz on this specific card. It features 144 SPUs along with 24 TAUs and 24 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GT 315 52 Watts
GeForce GT 450 (OEM) 106 Watts
Difference: 54 Watts (104%)

Memory Bandwidth

In theory, the GeForce GT 450 (OEM) should be 280% quicker than the GeForce GT 315 in general, because of its greater bandwidth. (explain)

GeForce GT 450 (OEM) 96000 MB/sec
GeForce GT 315 25280 MB/sec
Difference: 70720 (280%)

Texel Rate

The GeForce GT 450 (OEM) should be much (approximately 90%) faster with regards to texture filtering than the GeForce GT 315. (explain)

GeForce GT 450 (OEM) 18960 Mtexels/sec
GeForce GT 315 10000 Mtexels/sec
Difference: 8960 (90%)

Pixel Rate

If using lots of anti-aliasing is important to you, then the GeForce GT 450 (OEM) is a better choice, by a large margin. (explain)

GeForce GT 450 (OEM) 18960 Mpixels/sec
GeForce GT 315 5000 Mpixels/sec
Difference: 13960 (279%)

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 450 (OEM)

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 450 (OEM)
Manufacturer nVidia nVidia
Year November 2009 October 2010
Code Name GT216 GF106
Memory 512 MB 1536 MB
Core Speed 625 MHz 790 MHz
Memory Speed 1580 MHz 4000 MHz
Power (Max TDP) 52 watts 106 watts
Bandwidth 25280 MB/sec 96000 MB/sec
Texel Rate 10000 Mtexels/sec 18960 Mtexels/sec
Pixel Rate 5000 Mpixels/sec 18960 Mpixels/sec
Unified Shaders 48 144
Texture Mapping Units 16 24
Render Output Units 8 24
Bus Type DDR3 GDDR5
Bus Width 128-bit 192-bit
Fab Process 40 nm 40 nm
Transistors 486 million 1170 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 information (measured in megabytes per second) that can be transferred past the external memory interface in one second. It is calculated by multiplying the card's interface width by the speed of its memory. In the case of DDR memory, it should be multiplied by 2 again. If it uses DDR5, multiply by ANOTHER 2x. The better the card's 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 amount of texture map elements (texels) that are processed in one second. This is worked out by multiplying the total number of texture units by the core clock speed of the chip. The better this number, the better the graphics card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed in a second.

Pixel Rate: Pixel rate is the most pixels the video card could possibly record to the local memory in one second - measured in millions of pixels per second. The figure is calculated by multiplying the number of Raster Operations Pipelines by the the card's clock speed. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel fill rate also depends on many other factors, most notably the memory bandwidth of the card - the lower the bandwidth is, the lower the ability to get to the maximum fill rate.

Display Prices

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GeForce GT 315

Amazon.com

Check prices at:

GeForce GT 450 (OEM)

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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