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GeForce GT 315 vs Radeon HD 5830

Intro

The GeForce GT 315 has a GPU clock speed of 625 MHz, and the 512 MB of DDR3 RAM runs at 790 MHz through a 128-bit bus. It also is made up of 48 SPUs, 16 TAUs, and 8 Raster Operation Units.

Compare those specs to the Radeon HD 5830, which features a core clock speed of 800 MHz and a GDDR5 memory speed of 1000 MHz. It also makes use of a 256-bit bus, and makes use of a 40 nm design. It is made up of 1120(224x5) SPUs, 56 Texture Address Units, and 16 Raster Operation Units.

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GT 315 52 Watts
Radeon HD 5830 175 Watts
Difference: 123 Watts (237%)

Memory Bandwidth

Performance-wise, the Radeon HD 5830 should theoretically be a lot superior to the GeForce GT 315 in general. (explain)

Radeon HD 5830 128000 MB/sec
GeForce GT 315 25280 MB/sec
Difference: 102720 (406%)

Texel Rate

The Radeon HD 5830 will be much (about 348%) better at AF than the GeForce GT 315. (explain)

Radeon HD 5830 44800 Mtexels/sec
GeForce GT 315 10000 Mtexels/sec
Difference: 34800 (348%)

Pixel Rate

If using lots of anti-aliasing is important to you, then the Radeon HD 5830 is the winner, and very much so. (explain)

Radeon HD 5830 12800 Mpixels/sec
GeForce GT 315 5000 Mpixels/sec
Difference: 7800 (156%)

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 5830

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 5830
Manufacturer nVidia AMD
Year November 2009 February 25, 2010
Code Name GT216 Cypress LE
Memory 512 MB 1024 MB
Core Speed 625 MHz 800 MHz
Memory Speed 1580 MHz 4000 MHz
Power (Max TDP) 52 watts 175 watts
Bandwidth 25280 MB/sec 128000 MB/sec
Texel Rate 10000 Mtexels/sec 44800 Mtexels/sec
Pixel Rate 5000 Mpixels/sec 12800 Mpixels/sec
Unified Shaders 48 1120(224x5)
Texture Mapping Units 16 56
Render Output Units 8 16
Bus Type DDR3 GDDR5
Bus Width 128-bit 256-bit
Fab Process 40 nm 40 nm
Transistors 486 million 2154 million
Bus PCIe 2.0 PCIe 2.1 x16
DirectX Version DirectX 10.1 DirectX 11
OpenGL Version OpenGL 3.2 OpenGL 3.2

Memory Bandwidth: Bandwidth is the maximum amount of data (measured in megabytes per second) that can be moved across the external memory interface in one second. It's worked out by multiplying the card's bus width by the speed of its memory. In the case of DDR type memory, it should be multiplied by 2 again. If DDR5, multiply by 4 instead. The higher the memory bandwidth, the faster the card will be in general. It especially helps with AA, HDR 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 texture units by the core clock speed of the chip. The higher this number, the better the graphics card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed in one second.

Pixel Rate: Pixel rate is the most pixels the video card can possibly record to the local memory per second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the amount of colour ROPs by the clock speed of the card. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for outputting the pixels (image) to 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:

Radeon HD 5830

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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