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GeForce GT 1030 vs GeForce GT 640 DDR3

Intro

The GeForce GT 1030 makes use of a 16 nm design. nVidia has set the core frequency at 1265 MHz. The GDDR5 memory works at a frequency of 1502 MHz on this model. It features 384 SPUs along with 32 TAUs and 16 ROPs.

Compare those specs to the GeForce GT 640 DDR3, which features core 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.

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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

The GeForce GT 640 DDR3 should in theory be a little bit faster than the GeForce GT 1030 in general. (explain)

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

Texel Rate

The GeForce GT 1030 should be much (about 41%) better at AF 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

If running with a high resolution is important to you, then the GeForce GT 1030 is the winner, by far. (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: Memory bandwidth is the largest amount of information (in units of megabytes per second) that can be moved past the external memory interface in a second. It's worked out by multiplying the bus width by its memory clock speed. If it uses DDR type memory, the result should be multiplied by 2 once again. If it uses DDR5, multiply by 4 instead. The better the memory bandwidth, the better the card will be in general. It especially helps with anti-aliasing, High Dynamic Range and higher screen resolutions.

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

Pixel Rate: Pixel rate is the most pixels the graphics card could possibly record to its local memory per second - measured in millions of pixels per second. The number is calculated by multiplying the amount of Raster Operations Pipelines by the the card's clock speed. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel rate is also dependant on many other factors, especially the memory bandwidth - the lower the memory bandwidth is, the lower the ability to get to the maximum fill rate.

Display Prices

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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.

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