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GeForce 830M vs GeForce GTX 970M

Intro

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

Compare all that to the GeForce GTX 970M, which uses a 28 nm design. nVidia has clocked the core frequency at 924 MHz. The GDDR5 RAM works at a speed of 1000 MHz on this specific card. It features 1280 SPUs along with 80 TAUs and 48 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce 830M 25 Watts
GeForce GTX 970M 75 Watts
Difference: 50 Watts (200%)

Memory Bandwidth

In theory, the GeForce GTX 970M will be 567% faster than the GeForce 830M overall, because of its higher bandwidth. (explain)

GeForce GTX 970M 96000 MB/sec
GeForce 830M 14400 MB/sec
Difference: 81600 (567%)

Texel Rate

The GeForce GTX 970M is much (approximately 349%) more effective at AF than the GeForce 830M. (explain)

GeForce GTX 970M 73920 Mtexels/sec
GeForce 830M 16464 Mtexels/sec
Difference: 57456 (349%)

Pixel Rate

The GeForce GTX 970M should be a lot (more or less 439%) faster with regards to full screen anti-aliasing than the GeForce 830M, and also will be capable of handling higher resolutions without losing too much performance. (explain)

GeForce GTX 970M 44352 Mpixels/sec
GeForce 830M 8232 Mpixels/sec
Difference: 36120 (439%)

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 970M

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 970M
Manufacturer nVidia nVidia
Year March 12 2014 October 7 2014
Code Name GM108 GM204
Memory 2048 MB 3072 MB
Core Speed 1029 MHz 924 MHz
Memory Speed 1800 MHz 4000 MHz
Power (Max TDP) 25 watts 75 watts
Bandwidth 14400 MB/sec 96000 MB/sec
Texel Rate 16464 Mtexels/sec 73920 Mtexels/sec
Pixel Rate 8232 Mpixels/sec 44352 Mpixels/sec
Unified Shaders 256 1280
Texture Mapping Units 16 80
Render Output Units 8 48
Bus Type DDR3 GDDR5
Bus Width 64-bit 192-bit
Fab Process 28 nm 28 nm
Transistors (Unknown) million (Unknown) million
Bus PCIe 3.0 x16 PCIe 3.0 x16
DirectX Version DirectX 12 DirectX 12
OpenGL Version OpenGL 4.5 OpenGL 4.5

Memory Bandwidth: Memory bandwidth is the largest amount of data (counted in MB per second) that can be transported across the external memory interface within a second. The number is calculated by multiplying the card's bus width by its memory clock speed. In the case of DDR RAM, the result should be multiplied by 2 again. If it uses DDR5, multiply by ANOTHER 2x. The better the bandwidth is, the faster the card will be in general. It especially helps with anti-aliasing, HDR and high resolutions.

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

Pixel Rate: Pixel rate is the maximum amount of pixels the video card can possibly record to the local memory in one second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the amount of Raster Operations Pipelines by the the card's clock speed. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel rate also depends 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 GTX 970M

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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