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GeForce GT 315 vs Radeon HD 5830

Intro

The GeForce GT 315 features a GPU core speed of 625 MHz, and the 512 MB of DDR3 memory runs at 790 MHz through a 128-bit bus. It also features 48 SPUs, 16 Texture Address Units, and 8 ROPs.

Compare all of that to the Radeon HD 5830, which uses a 40 nm design. AMD has set the core frequency at 800 MHz. The GDDR5 memory runs at a frequency of 1000 MHz on this particular card. It features 1120(224x5) SPUs along with 56 TAUs and 16 ROPs.

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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

The Radeon HD 5830 should theoretically be much faster than the GeForce GT 315 overall. (explain)

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

Texel Rate

The Radeon HD 5830 should be much (approximately 348%) faster with regards to 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 a high screen resolution is important to you, then the Radeon HD 5830 is a better choice, 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: Memory bandwidth is the max amount of information (in units of MB per second) that can be transported across the external memory interface in a second. It is calculated by multiplying the card's bus width by its memory clock speed. In the case of DDR RAM, it must be multiplied by 2 once again. If it uses DDR5, multiply by ANOTHER 2x. The better the memory bandwidth, the better the card will be in general. It especially helps with AA, High Dynamic Range and higher screen resolutions.

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

Pixel Rate: Pixel rate is the maximum amount of pixels the video card can possibly write to its local memory in a second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the number of colour ROPs by the the core clock speed. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel rate is also dependant on quite a few other factors, most notably the memory bandwidth - the lower the bandwidth is, the lower the ability to get to the max 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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