Submit Benchmarks!

Submit SSD Benchmark
Submit GPU Benchmark

Compare any two graphics cards:
VS

GeForce 8800 GS vs GeForce GT 640 DDR3

Intro

The GeForce 8800 GS features a core clock frequency of 550 MHz and a GDDR3 memory frequency of 800 MHz. It also uses a 192-bit bus, and makes use of a 65 nm design. It is comprised of 96 SPUs, 48 Texture Address Units, and 12 Raster Operation Units.

Compare that to the GeForce GT 640 DDR3, which comes with GPU clock speed of 900 MHz, and 2048 MB of DDR3 RAM set to run at 1782 MHz through a 128-bit bus. It also features 384 Stream Processors, 32 Texture Address Units, and 16 ROPs.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GT 640 DDR3 65 Watts
GeForce 8800 GS 105 Watts
Difference: 40 Watts (62%)

Memory Bandwidth

The GeForce GT 640 DDR3, in theory, should be much faster than the GeForce 8800 GS in general. (explain)

GeForce GT 640 DDR3 57024 MB/sec
GeForce 8800 GS 38400 MB/sec
Difference: 18624 (49%)

Texel Rate

The GeForce GT 640 DDR3 is a small bit (approximately 9%) better at texture filtering than the GeForce 8800 GS. (explain)

GeForce GT 640 DDR3 28800 Mtexels/sec
GeForce 8800 GS 26400 Mtexels/sec
Difference: 2400 (9%)

Pixel Rate

If running with a high resolution is important to you, then the GeForce GT 640 DDR3 is superior to the GeForce 8800 GS, and very much so. (explain)

GeForce GT 640 DDR3 14400 Mpixels/sec
GeForce 8800 GS 6600 Mpixels/sec
Difference: 7800 (118%)

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 8800 GS

Amazon.com

Check prices at:

GeForce GT 640 DDR3

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

Display Specifications

Hide Specifications

Model GeForce 8800 GS GeForce GT 640 DDR3
Manufacturer nVidia nVidia
Year Jan 2008 June 2012
Code Name G92 GK107
Memory 384 MB 2048 MB
Core Speed 550 MHz 900 MHz
Memory Speed 1600 MHz 3564 MHz
Power (Max TDP) 105 watts 65 watts
Bandwidth 38400 MB/sec 57024 MB/sec
Texel Rate 26400 Mtexels/sec 28800 Mtexels/sec
Pixel Rate 6600 Mpixels/sec 14400 Mpixels/sec
Unified Shaders 96 384
Texture Mapping Units 48 32
Render Output Units 12 16
Bus Type GDDR3 DDR3
Bus Width 192-bit 128-bit
Fab Process 65 nm 28 nm
Transistors 754 million 1300 million
Bus 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 information (measured in MB per second) that can be moved over the external memory interface within a second. It is worked out by multiplying the card's interface width by its memory clock speed. In the case of DDR type memory, it should 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, HDR and high resolutions.

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

Pixel Rate: Pixel rate is the most pixels the video card can possibly write to the local memory per second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the amount 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 fill rate also depends on many other factors, most notably the memory bandwidth of the card - the lower the memory bandwidth is, the lower the potential to get to the maximum fill rate.

Display Prices

Hide Prices

GeForce 8800 GS

Amazon.com

Check prices at:

GeForce GT 640 DDR3

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.

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