I get commissions for purchases made through links on this page. (more info)

Compare any two graphics cards:
VS

GeForce 9500 GT DDR2 vs GeForce GT 640 DDR3

Intro

The GeForce 9500 GT DDR2 features a core clock speed of 550 MHz and a DDR2 memory frequency of 500 MHz. It also uses a 128-bit bus, and uses a 65 nm design. It is comprised of 32 SPUs, 16 Texture Address Units, and 8 ROPs.

Compare all of that to the GeForce GT 640 DDR3, which has a core clock speed of 900 MHz and a DDR3 memory frequency of 1782 MHz. It also makes use of a 128-bit memory bus, and uses a 28 nm design. It features 384 SPUs, 32 Texture Address Units, and 16 Raster Operation Units.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce 9500 GT DDR2 50 Watts
GeForce GT 640 DDR3 65 Watts
Difference: 15 Watts (30%)

Memory Bandwidth

Performance-wise, the GeForce GT 640 DDR3 should theoretically be much better than the GeForce 9500 GT DDR2 overall. (explain)

GeForce GT 640 DDR3 57024 MB/sec
GeForce 9500 GT DDR2 16000 MB/sec
Difference: 41024 (256%)

Texel Rate

The GeForce GT 640 DDR3 should be a lot (approximately 227%) faster with regards to AF than the GeForce 9500 GT DDR2. (explain)

GeForce GT 640 DDR3 28800 Mtexels/sec
GeForce 9500 GT DDR2 8800 Mtexels/sec
Difference: 20000 (227%)

Pixel Rate

The GeForce GT 640 DDR3 is a lot (approximately 227%) better at anti-aliasing than the GeForce 9500 GT DDR2, and capable of handling higher screen resolutions more effectively. (explain)

GeForce GT 640 DDR3 14400 Mpixels/sec
GeForce 9500 GT DDR2 4400 Mpixels/sec
Difference: 10000 (227%)

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 9500 GT DDR2

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 9500 GT DDR2 GeForce GT 640 DDR3
Manufacturer nVidia nVidia
Year July 2008 June 2012
Code Name G96a GK107
Memory 256 MB 2048 MB
Core Speed 550 MHz 900 MHz
Memory Speed 1000 MHz 3564 MHz
Power (Max TDP) 50 watts 65 watts
Bandwidth 16000 MB/sec 57024 MB/sec
Texel Rate 8800 Mtexels/sec 28800 Mtexels/sec
Pixel Rate 4400 Mpixels/sec 14400 Mpixels/sec
Unified Shaders 32 384
Texture Mapping Units 16 32
Render Output Units 8 16
Bus Type DDR2 DDR3
Bus Width 128-bit 128-bit
Fab Process 65 nm 28 nm
Transistors 314 million 1300 million
Bus PCIe x16 2.0, PCI PCIe 3.0 x16
DirectX Version DirectX 10 DirectX 11.0
OpenGL Version OpenGL 3.0 OpenGL 4.2

Memory Bandwidth: Bandwidth is the max amount of information (in units of megabytes per second) that can be transferred across the external memory interface in one second. The number is calculated by multiplying the interface 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 4 instead. The higher the memory bandwidth, the better the card will be in general. It especially helps with AA, High Dynamic Range and high resolutions.

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

Pixel Rate: Pixel rate is the most pixels that the graphics chip could possibly record to its local memory in one second - measured in millions of pixels per second. The figure 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 filling the screen with pixels (the image). The actual pixel output rate also depends on quite a few other factors, most notably the memory bandwidth of the card - the lower the bandwidth is, the lower the ability to get to the max fill rate.

Display Prices

Hide Prices

GeForce 9500 GT DDR2

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