Submit Benchmarks!

Submit SSD Benchmark
Submit GPU Benchmark

Compare any two graphics cards:
VS

GeForce 8500 GT vs GeForce GT 640 DDR3


Intro

The GeForce 8500 GT makes use of a 80 nm design. nVidia has set the core speed at 450 MHz. The DDR2 memory is set to run at a frequency of 400 MHz on this specific card. It features 16 SPUs as well as 8 Texture Address Units and 4 ROPs.

Compare those specifications to the GeForce GT 640 DDR3, which uses a 28 nm design. nVidia has set the core speed at 900 MHz. The DDR3 RAM runs at a speed of 1782 MHz on this particular model. It features 384 SPUs along with 32 TAUs and 16 ROPs.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce 8500 GT 45 Watts
GeForce GT 640 DDR3 65 Watts
Difference: 20 Watts (44%)

Memory Bandwidth

Performance-wise, the GeForce GT 640 DDR3 should in theory be a lot superior to the GeForce 8500 GT in general. (explain)

GeForce GT 640 DDR3 57024 MB/sec
GeForce 8500 GT 12800 MB/sec
Difference: 44224 (346%)

Texel Rate

The GeForce GT 640 DDR3 will be a lot (approximately 700%) faster with regards to anisotropic filtering than the GeForce 8500 GT. (explain)

GeForce GT 640 DDR3 28800 Mtexels/sec
GeForce 8500 GT 3600 Mtexels/sec
Difference: 25200 (700%)

Pixel Rate

The GeForce GT 640 DDR3 will be a lot (about 700%) better at full screen anti-aliasing than the GeForce 8500 GT, and able to handle higher resolutions better. (explain)

GeForce GT 640 DDR3 14400 Mpixels/sec
GeForce 8500 GT 1800 Mpixels/sec
Difference: 12600 (700%)

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

Display Prices

Hide Prices

GeForce 8500 GT

Amazon.com

GeForce GT 640 DDR3

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

Display Specifications

Hide Specifications

Model GeForce 8500 GT GeForce GT 640 DDR3
Manufacturer nVidia nVidia
Year April 2007 June 2012
Code Name G86 GK107
Memory 512 MB 2048 MB
Core Speed 450 MHz 900 MHz
Memory Speed 800 MHz 3564 MHz
Power (Max TDP) 45 watts 65 watts
Bandwidth 12800 MB/sec 57024 MB/sec
Texel Rate 3600 Mtexels/sec 28800 Mtexels/sec
Pixel Rate 1800 Mpixels/sec 14400 Mpixels/sec
Unified Shaders 16 384
Texture Mapping Units 8 32
Render Output Units 4 16
Bus Type DDR2 DDR3
Bus Width 128-bit 128-bit
Fab Process 80 nm 28 nm
Transistors 210 million 1300 million
Bus PCIe x16, PCI, PCIe x16 2.0 PCIe 3.0 x16
DirectX Version DirectX 10 DirectX 11.0
OpenGL Version OpenGL 3.0 OpenGL 4.2

Memory Bandwidth: Bandwidth is the largest amount of data (measured in MB per second) that can be transported across the external memory interface within a second. The number is calculated by multiplying the bus width by the speed of its memory. In the case of DDR type RAM, it should be multiplied by 2 again. If DDR5, multiply by ANOTHER 2x. The higher the bandwidth is, 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 are processed per second. This is worked out by multiplying the total amount of texture units of the card by the core speed of the chip. The higher this number, the better the card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied in a second.

Pixel Rate: Pixel rate is the most pixels the graphics card can possibly record to its local memory in a second - measured in millions of pixels per second. The number is calculated by multiplying the number of colour ROPs by the clock speed of the card. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel rate also depends on many other factors, especially the memory bandwidth - the lower the bandwidth is, the lower the ability to get to the maximum fill rate.

Display Prices

Hide Prices

GeForce 8500 GT

Amazon.com

GeForce GT 640 DDR3

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.

Comments

Be the first to leave a comment!

Your email address will not be published. Required fields are marked *


*

WordPress Anti-Spam by WP-SpamShield


[X]
[X]