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GeForce 8500 GT vs GeForce GT 310

Intro

The GeForce 8500 GT uses a 80 nm design. nVidia has clocked the core speed at 450 MHz. The DDR2 RAM is set to run at a speed of 400 MHz on this specific model. It features 16 SPUs as well as 8 TAUs and 4 Rasterization Operator Units.

Compare all that to the GeForce GT 310, which comes with GPU clock speed of 589 MHz, and 512 MB of DDR2 memory set to run at 1000 MHz through a 64-bit bus. It also is made up of 16 SPUs, 8 Texture Address Units, and 4 Raster Operation Units.

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GT 310 31 Watts
GeForce 8500 GT 45 Watts
Difference: 14 Watts (45%)

Memory Bandwidth

Performance-wise, the GeForce GT 310 should in theory be quite a bit better than the GeForce 8500 GT overall. (explain)

GeForce GT 310 16000 MB/sec
GeForce 8500 GT 12800 MB/sec
Difference: 3200 (25%)

Texel Rate

The GeForce GT 310 is a lot (approximately 31%) faster with regards to anisotropic filtering than the GeForce 8500 GT. (explain)

GeForce GT 310 4712 Mtexels/sec
GeForce 8500 GT 3600 Mtexels/sec
Difference: 1112 (31%)

Pixel Rate

The GeForce GT 310 should be a lot (more or less 31%) better at full screen anti-aliasing than the GeForce 8500 GT, and capable of handling higher resolutions more effectively. (explain)

GeForce GT 310 2356 Mpixels/sec
GeForce 8500 GT 1800 Mpixels/sec
Difference: 556 (31%)

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 8500 GT

Amazon.com

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GeForce GT 310

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 8500 GT GeForce GT 310
Manufacturer nVidia nVidia
Year April 2007 November 2009
Code Name G86 GT218
Memory 512 MB 512 MB
Core Speed 450 MHz 589 MHz
Memory Speed 800 MHz 2000 MHz
Power (Max TDP) 45 watts 31 watts
Bandwidth 12800 MB/sec 16000 MB/sec
Texel Rate 3600 Mtexels/sec 4712 Mtexels/sec
Pixel Rate 1800 Mpixels/sec 2356 Mpixels/sec
Unified Shaders 16 16
Texture Mapping Units 8 8
Render Output Units 4 4
Bus Type DDR2 DDR2
Bus Width 128-bit 64-bit
Fab Process 80 nm 40 nm
Transistors 210 million 260 million
Bus PCIe x16, PCI, PCIe x16 2.0 PCIe 2.0
DirectX Version DirectX 10 DirectX 10.1
OpenGL Version OpenGL 3.0 OpenGL 3.1

Memory Bandwidth: Bandwidth is the largest amount of information (measured in megabytes per second) that can be transported past the external memory interface within a second. The number is calculated by multiplying the bus width by its memory clock speed. If the card has DDR type memory, the result should be multiplied by 2 once again. If DDR5, multiply by ANOTHER 2x. The higher the bandwidth is, the better the card will be in general. It especially helps with anti-aliasing, HDR and higher screen resolutions.

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

Pixel Rate: Pixel rate is the maximum number of pixels that the graphics chip can possibly write to the local memory per second - measured in millions of pixels per second. The number is calculated by multiplying the amount of ROPs by the the core clock speed. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel fill rate also depends on quite a few other factors, most notably the memory bandwidth of the card - the lower the memory bandwidth is, the lower the ability to reach the maximum fill rate.

Display Prices

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GeForce 8500 GT

Amazon.com

Check prices at:

GeForce GT 310

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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