Submit Benchmarks!

Submit SSD Benchmark
Submit GPU Benchmark

Compare any two graphics cards:
VS

GeForce GT 640 DDR3 vs GeForce GTX 460 SE

Intro

The GeForce GT 640 DDR3 comes with a clock speed of 900 MHz and a DDR3 memory speed of 1782 MHz. It also uses a 128-bit memory bus, and uses a 28 nm design. It is made up of 384 SPUs, 32 TAUs, and 16 ROPs.

Compare all of that to the GeForce GTX 460 SE, which features a clock frequency of 650 MHz and a GDDR5 memory frequency of 850 MHz. It also makes use of a 256-bit bus, and uses a 40 nm design. It features 288 SPUs, 48 Texture Address Units, and 32 ROPs.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GT 640 DDR3 65 Watts
GeForce GTX 460 SE 150 Watts
Difference: 85 Watts (131%)

Memory Bandwidth

The GeForce GTX 460 SE should in theory be much faster than the GeForce GT 640 DDR3 in general. (explain)

GeForce GTX 460 SE 108800 MB/sec
GeForce GT 640 DDR3 57024 MB/sec
Difference: 51776 (91%)

Texel Rate

The GeForce GTX 460 SE is a small bit (about 8%) faster with regards to texture filtering than the GeForce GT 640 DDR3. (explain)

GeForce GTX 460 SE 31200 Mtexels/sec
GeForce GT 640 DDR3 28800 Mtexels/sec
Difference: 2400 (8%)

Pixel Rate

The GeForce GTX 460 SE is a lot (about 44%) faster with regards to full screen anti-aliasing than the GeForce GT 640 DDR3, and also capable of handling higher resolutions while still performing well. (explain)

GeForce GTX 460 SE 20800 Mpixels/sec
GeForce GT 640 DDR3 14400 Mpixels/sec
Difference: 6400 (44%)

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 GT 640 DDR3

Amazon.com

Check prices at:

GeForce GTX 460 SE

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 GT 640 DDR3 GeForce GTX 460 SE
Manufacturer nVidia nVidia
Year June 2012 November 2010
Code Name GK107 GF104
Memory 2048 MB 1024 MB
Core Speed 900 MHz 650 MHz
Memory Speed 3564 MHz 3400 MHz
Power (Max TDP) 65 watts 150 watts
Bandwidth 57024 MB/sec 108800 MB/sec
Texel Rate 28800 Mtexels/sec 31200 Mtexels/sec
Pixel Rate 14400 Mpixels/sec 20800 Mpixels/sec
Unified Shaders 384 288
Texture Mapping Units 32 48
Render Output Units 16 32
Bus Type DDR3 GDDR5
Bus Width 128-bit 256-bit
Fab Process 28 nm 40 nm
Transistors 1300 million 1950 million
Bus PCIe 3.0 x16 PCIe x16
DirectX Version DirectX 11.0 DirectX 11
OpenGL Version OpenGL 4.2 OpenGL 4.1

Memory Bandwidth: Memory bandwidth is the largest amount of data (in units of megabytes per second) that can be moved past the external memory interface in a second. It is worked out by multiplying the card's bus width by the speed of its memory. If it uses DDR type RAM, it should be multiplied by 2 again. If it uses DDR5, multiply by ANOTHER 2x. The higher the bandwidth is, the faster the card will be in general. It especially helps with AA, High Dynamic Range and high resolutions.

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

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

Display Prices

Hide Prices

GeForce GT 640 DDR3

Amazon.com

Check prices at:

GeForce GTX 460 SE

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