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GeForce 830M vs GeForce GT 230

Intro

The GeForce 830M comes with a clock speed of 1029 MHz and a DDR3 memory speed of 900 MHz. It also uses a 64-bit bus, and makes use of a 28 nm design. It is comprised of 256 SPUs, 16 Texture Address Units, and 8 ROPs.

Compare all of that to the GeForce GT 230, which uses a 40 nm design. nVidia has clocked the core speed at 550 MHz. The DDR3 memory works at a frequency of 800 MHz on this card. It features 32 SPUs as well as 16 Texture Address Units and 8 Rasterization Operator Units.

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce 830M 25 Watts
GeForce GT 230 65 Watts
Difference: 40 Watts (160%)

Memory Bandwidth

The GeForce GT 230, in theory, should be a lot faster than the GeForce 830M in general. (explain)

GeForce GT 230 38400 MB/sec
GeForce 830M 14400 MB/sec
Difference: 24000 (167%)

Texel Rate

The GeForce 830M will be a lot (approximately 87%) better at AF than the GeForce GT 230. (explain)

GeForce 830M 16464 Mtexels/sec
GeForce GT 230 8800 Mtexels/sec
Difference: 7664 (87%)

Pixel Rate

If using a high screen resolution is important to you, then the GeForce 830M is superior to the GeForce GT 230, and very much so. (explain)

GeForce 830M 8232 Mpixels/sec
GeForce GT 230 4400 Mpixels/sec
Difference: 3832 (87%)

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 830M

Amazon.com

Check prices at:

GeForce GT 230

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 830M GeForce GT 230
Manufacturer nVidia nVidia
Year March 12 2014 October 2009
Code Name GM108 GT218
Memory 2048 MB 1536 MB
Core Speed 1029 MHz 550 MHz
Memory Speed 1800 MHz 1600 MHz
Power (Max TDP) 25 watts 65 watts
Bandwidth 14400 MB/sec 38400 MB/sec
Texel Rate 16464 Mtexels/sec 8800 Mtexels/sec
Pixel Rate 8232 Mpixels/sec 4400 Mpixels/sec
Unified Shaders 256 32
Texture Mapping Units 16 16
Render Output Units 8 8
Bus Type DDR3 DDR3
Bus Width 64-bit 192-bit
Fab Process 28 nm 40 nm
Transistors (Unknown) million 260 million
Bus PCIe 3.0 x16 PCIe 2.0
DirectX Version DirectX 12 DirectX 10.1
OpenGL Version OpenGL 4.5 OpenGL 3.2

Memory Bandwidth: Bandwidth is the largest amount of information (counted in MB per second) that can be transferred across the external memory interface within a second. The number is calculated by multiplying the interface width by its memory clock speed. In the case of DDR RAM, it must be multiplied by 2 once again. If DDR5, multiply by ANOTHER 2x. The better the card's memory bandwidth, 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 texture map elements (texels) that can be applied in one second. This figure is worked out by multiplying the total number of texture units by the core clock 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 in one second.

Pixel Rate: Pixel rate is the most pixels the video card could possibly write to its local memory in a second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the number of ROPs 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, especially the memory bandwidth - the lower the memory bandwidth is, the lower the potential to get to the max fill rate.

Display Prices

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GeForce 830M

Amazon.com

Check prices at:

GeForce GT 230

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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