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GeForce GT 1030 vs GeForce GT 640 DDR3

Intro

The GeForce GT 1030 has core clock speeds of 1265 MHz on the GPU, and 1502 MHz on the 2048 MB of GDDR5 RAM. It features 384 SPUs along with 32 Texture Address Units and 16 ROPs.

Compare that to the GeForce GT 640 DDR3, which has a GPU core clock speed of 900 MHz, and 2048 MB of DDR3 memory set to run at 1782 MHz through a 128-bit bus. It also is comprised of 384 SPUs, 32 TAUs, and 16 Raster Operation Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GT 1030 30 Watts
GeForce GT 640 DDR3 65 Watts
Difference: 35 Watts (117%)

Memory Bandwidth

Theoretically, the GeForce GT 640 DDR3 should be a bit faster than the GeForce GT 1030 overall. (explain)

GeForce GT 640 DDR3 57024 MB/sec
GeForce GT 1030 49152 MB/sec
Difference: 7872 (16%)

Texel Rate

The GeForce GT 1030 is quite a bit (more or less 41%) faster with regards to anisotropic filtering than the GeForce GT 640 DDR3. (explain)

GeForce GT 1030 40480 Mtexels/sec
GeForce GT 640 DDR3 28800 Mtexels/sec
Difference: 11680 (41%)

Pixel Rate

The GeForce GT 1030 should be much (more or less 41%) more effective at anti-aliasing than the GeForce GT 640 DDR3, and capable of handling higher resolutions without slowing down too much. (explain)

GeForce GT 1030 20240 Mpixels/sec
GeForce GT 640 DDR3 14400 Mpixels/sec
Difference: 5840 (41%)

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

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GeForce GT 1030

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

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Model GeForce GT 1030 GeForce GT 640 DDR3
Manufacturer nVidia nVidia
Year May 2017 June 2012
Code Name GP108-300 GK107
Memory 2048 MB 2048 MB
Core Speed 1265 MHz 900 MHz
Memory Speed 6008 MHz 3564 MHz
Power (Max TDP) 30 watts 65 watts
Bandwidth 49152 MB/sec 57024 MB/sec
Texel Rate 40480 Mtexels/sec 28800 Mtexels/sec
Pixel Rate 20240 Mpixels/sec 14400 Mpixels/sec
Unified Shaders 384 384
Texture Mapping Units 32 32
Render Output Units 16 16
Bus Type GDDR5 DDR3
Bus Width 64-bit 128-bit
Fab Process 16 nm 28 nm
Transistors 3300 million 1300 million
Bus PCIe 3.0 x16 PCIe 3.0 x16
DirectX Version DirectX 12.0 DirectX 11.0
OpenGL Version OpenGL 4.5 OpenGL 4.2

Memory Bandwidth: Bandwidth is the largest amount of data (measured in MB per second) that can be transferred over the external memory interface within a second. It's calculated by multiplying the card's interface width by the speed of its memory. In the case of DDR memory, it must be multiplied by 2 again. If DDR5, multiply by 4 instead. The higher the card's memory bandwidth, the faster 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 number of texture map elements (texels) that are applied in one second. This is calculated by multiplying the total number of texture units by the core speed of the chip. The higher this number, the better the card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels in a second.

Pixel Rate: Pixel rate is the maximum amount of pixels that the graphics card can possibly record to the local memory per second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the number of Render Output Units by the the core clock speed. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel rate is also dependant on lots of 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 1030

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.

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