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GeForce 830M vs GeForce GTX 275

Intro

The GeForce 830M features a core clock speed of 1029 MHz and a DDR3 memory speed of 900 MHz. It also makes use of a 64-bit bus, and makes use of a 28 nm design. It is made up of 256 SPUs, 16 Texture Address Units, and 8 Raster Operation Units.

Compare that to the GeForce GTX 275, which comes with clock speeds of 633 MHz on the GPU, and 1134 MHz on the 896 MB of GDDR3 memory. It features 240 SPUs along with 80 Texture Address Units and 28 Rasterization Operator Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce 830M 25 Watts
GeForce GTX 275 219 Watts
Difference: 194 Watts (776%)

Memory Bandwidth

Theoretically speaking, the GeForce GTX 275 will be 782% quicker than the GeForce 830M overall, because of its greater data rate. (explain)

GeForce GTX 275 127008 MB/sec
GeForce 830M 14400 MB/sec
Difference: 112608 (782%)

Texel Rate

The GeForce GTX 275 is quite a bit (more or less 208%) faster with regards to texture filtering than the GeForce 830M. (explain)

GeForce GTX 275 50640 Mtexels/sec
GeForce 830M 16464 Mtexels/sec
Difference: 34176 (208%)

Pixel Rate

If using a high screen resolution is important to you, then the GeForce GTX 275 is the winner, by a large margin. (explain)

GeForce GTX 275 17724 Mpixels/sec
GeForce 830M 8232 Mpixels/sec
Difference: 9492 (115%)

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

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GeForce GTX 275

Amazon.com

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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 GTX 275
Manufacturer nVidia nVidia
Year March 12 2014 April 9, 2009
Code Name GM108 G200b
Memory 2048 MB 896 MB
Core Speed 1029 MHz 633 MHz
Memory Speed 1800 MHz 2268 MHz
Power (Max TDP) 25 watts 219 watts
Bandwidth 14400 MB/sec 127008 MB/sec
Texel Rate 16464 Mtexels/sec 50640 Mtexels/sec
Pixel Rate 8232 Mpixels/sec 17724 Mpixels/sec
Unified Shaders 256 240
Texture Mapping Units 16 80
Render Output Units 8 28
Bus Type DDR3 GDDR3
Bus Width 64-bit 448-bit
Fab Process 28 nm 55 nm
Transistors (Unknown) million 1400 million
Bus PCIe 3.0 x16 PCIe x16 2.0
DirectX Version DirectX 12 DirectX 10
OpenGL Version OpenGL 4.5 OpenGL 3.1

Memory Bandwidth: Bandwidth is the maximum amount of data (measured in MB per second) that can be transported over the external memory interface in one second. It is calculated by multiplying the card's interface width by its memory clock speed. If the card has DDR type RAM, the result should be multiplied by 2 once again. If DDR5, multiply by 4 instead. The better the card's memory bandwidth, the better the card will be in general. It especially helps with AA, HDR and high resolutions.

Texel Rate: Texel rate is the maximum number of texture map elements (texels) that are applied per second. This 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 card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed in one second.

Pixel Rate: Pixel rate is the maximum amount of pixels that the graphics card could possibly write to its local memory per second - measured in millions of pixels per second. The number is calculated by multiplying the amount of ROPs by the the card's clock speed. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel output rate also depends on lots of 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 830M

Amazon.com

Check prices at:

GeForce GTX 275

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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