Submit Benchmarks!

Submit SSD Benchmark
Submit GPU Benchmark

Compare any two graphics cards:
VS

GeForce GT 640 DDR3 vs Radeon HD 5830

Intro

The GeForce GT 640 DDR3 comes with clock speeds of 900 MHz on the GPU, and 1782 MHz on the 2048 MB of DDR3 RAM. It features 384 SPUs as well as 32 TAUs and 16 Rasterization Operator Units.

Compare all that to the Radeon HD 5830, which features a core clock frequency of 800 MHz and a GDDR5 memory speed of 1000 MHz. It also features a 256-bit memory bus, and makes use of a 40 nm design. It features 1120(224x5) SPUs, 56 TAUs, and 16 Raster Operation Units.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GT 640 DDR3 65 Watts
Radeon HD 5830 175 Watts
Difference: 110 Watts (169%)

Memory Bandwidth

Theoretically, the Radeon HD 5830 should perform quite a bit faster than the GeForce GT 640 DDR3 overall. (explain)

Radeon HD 5830 128000 MB/sec
GeForce GT 640 DDR3 57024 MB/sec
Difference: 70976 (124%)

Texel Rate

The Radeon HD 5830 should be quite a bit (more or less 56%) faster with regards to AF than the GeForce GT 640 DDR3. (explain)

Radeon HD 5830 44800 Mtexels/sec
GeForce GT 640 DDR3 28800 Mtexels/sec
Difference: 16000 (56%)

Pixel Rate

If using a high screen resolution is important to you, then the GeForce GT 640 DDR3 is superior to the Radeon HD 5830, not by a very large margin though. (explain)

GeForce GT 640 DDR3 14400 Mpixels/sec
Radeon HD 5830 12800 Mpixels/sec
Difference: 1600 (13%)

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:

Radeon HD 5830

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 Radeon HD 5830
Manufacturer nVidia AMD
Year June 2012 February 25, 2010
Code Name GK107 Cypress LE
Memory 2048 MB 1024 MB
Core Speed 900 MHz 800 MHz
Memory Speed 3564 MHz 4000 MHz
Power (Max TDP) 65 watts 175 watts
Bandwidth 57024 MB/sec 128000 MB/sec
Texel Rate 28800 Mtexels/sec 44800 Mtexels/sec
Pixel Rate 14400 Mpixels/sec 12800 Mpixels/sec
Unified Shaders 384 1120(224x5)
Texture Mapping Units 32 56
Render Output Units 16 16
Bus Type DDR3 GDDR5
Bus Width 128-bit 256-bit
Fab Process 28 nm 40 nm
Transistors 1300 million 2154 million
Bus PCIe 3.0 x16 PCIe 2.1 x16
DirectX Version DirectX 11.0 DirectX 11
OpenGL Version OpenGL 4.2 OpenGL 3.2

Memory Bandwidth: Bandwidth is the max amount of data (in units of megabytes per second) that can be transferred across the external memory interface in one second. It is worked out by multiplying the card's bus width by its memory clock speed. If it uses DDR type memory, it should be multiplied by 2 once again. If it uses 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 high resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that can be applied in one second. This figure is worked out by multiplying the total texture units by the core clock 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 one second.

Pixel Rate: Pixel rate is the maximum amount of pixels the video card can possibly write to its local memory in one second - measured in millions of pixels per second. The figure is worked out by multiplying the number of Raster Operations Pipelines by the clock speed of the card. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel rate is also dependant 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 GT 640 DDR3

Amazon.com

Check prices at:

Radeon HD 5830

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