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GeForce GT 315 vs GeForce GTX 560

Intro

The GeForce GT 315 makes use of a 40 nm design. nVidia has clocked the core speed at 625 MHz. The DDR3 RAM works at a frequency of 790 MHz on this particular card. It features 48 SPUs as well as 16 Texture Address Units and 8 Rasterization Operator Units.

Compare those specs to the GeForce GTX 560, which has core speeds of 810 MHz on the GPU, and 1001 MHz on the 1024 MB of GDDR5 memory. It features 336 SPUs as well as 56 Texture Address Units and 32 ROPs.

(No game benchmarks for this combination yet.)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GT 315 52 Watts
GeForce GTX 560 150 Watts
Difference: 98 Watts (188%)

Memory Bandwidth

Performance-wise, the GeForce GTX 560 should theoretically be a lot better than the GeForce GT 315 in general. (explain)

GeForce GTX 560 128128 MB/sec
GeForce GT 315 25280 MB/sec
Difference: 102848 (407%)

Texel Rate

The GeForce GTX 560 should be quite a bit (more or less 354%) faster with regards to texture filtering than the GeForce GT 315. (explain)

GeForce GTX 560 45360 Mtexels/sec
GeForce GT 315 10000 Mtexels/sec
Difference: 35360 (354%)

Pixel Rate

The GeForce GTX 560 is much (approximately 418%) faster with regards to full screen anti-aliasing than the GeForce GT 315, and also will be capable of handling higher screen resolutions better. (explain)

GeForce GTX 560 25920 Mpixels/sec
GeForce GT 315 5000 Mpixels/sec
Difference: 20920 (418%)

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

GeForce GT 315

Amazon.com

GeForce GTX 560

Amazon.com

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

Model GeForce GT 315 GeForce GTX 560
Manufacturer nVidia nVidia
Year November 2009 May 2011
Code Name GT216 GF114
Fab Process 40 nm 40 nm
Bus PCIe 2.0 PCIe 2.0 x16
Memory 512 MB 1024 MB
Core Speed 625 MHz 810 MHz
Shader Speed 1360 MHz 1600 MHz
Memory Speed 790 MHz (1580 MHz effective) 1001 MHz (4004 MHz effective)
Unified Shaders 48 336
Texture Mapping Units 16 56
Render Output Units 8 32
Bus Type DDR3 GDDR5
Bus Width 128-bit 256-bit
DirectX Version DirectX 10.1 DirectX 11
OpenGL Version OpenGL 3.2 OpenGL 4.1
Power (Max TDP) 52 watts 150 watts
Shader Model 4.1 5.0
Bandwidth 25280 MB/sec 128128 MB/sec
Texel Rate 10000 Mtexels/sec 45360 Mtexels/sec
Pixel Rate 5000 Mpixels/sec 25920 Mpixels/sec

Memory Bandwidth: Bandwidth is the largest amount of data (in units of MB per second) that can be moved across the external memory interface within a second. It's worked out by multiplying the bus width by its memory speed. If it uses DDR memory, it must be multiplied by 2 once again. If DDR5, multiply by 4 instead. The higher the memory bandwidth, the better 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 are processed in one second. This number is calculated by multiplying the total amount of texture units by the core clock speed of the chip. The higher this number, the better the graphics card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed in one second.

Pixel Rate: Pixel rate is the maximum amount of pixels that the graphics card could possibly record to the local memory in one second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the amount of Render Output Units by the the core clock speed. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel output rate is also dependant on many other factors, especially the memory bandwidth of the card - the lower the bandwidth is, the lower the ability to get to the max fill rate.

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