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GeForce GTX 970M vs Radeon HD 3850 1GB

Intro

The GeForce GTX 970M comes with a core clock speed of 924 MHz and a GDDR5 memory frequency of 1000 MHz. It also uses a 192-bit memory bus, and uses a 28 nm design. It is made up of 1280 SPUs, 80 Texture Address Units, and 48 Raster Operation Units.

Compare all that to the Radeon HD 3850 1GB, which uses a 55 nm design. AMD has set the core speed at 668 MHz. The GDDR3 RAM is set to run at a speed of 828 MHz on this particular card. It features 320(64x5) SPUs as well as 16 TAUs and 16 Rasterization Operator Units.

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Power Usage and Theoretical Benchmarks

Both cards have the same power consumption.

Memory Bandwidth

The GeForce GTX 970M should theoretically perform much faster than the Radeon HD 3850 1GB overall. (explain)

GeForce GTX 970M 96000 MB/sec
Radeon HD 3850 1GB 52992 MB/sec
Difference: 43008 (81%)

Texel Rate

The GeForce GTX 970M should be much (more or less 592%) more effective at anisotropic filtering than the Radeon HD 3850 1GB. (explain)

GeForce GTX 970M 73920 Mtexels/sec
Radeon HD 3850 1GB 10688 Mtexels/sec
Difference: 63232 (592%)

Pixel Rate

If using a high screen resolution is important to you, then the GeForce GTX 970M is the winner, by far. (explain)

GeForce GTX 970M 44352 Mpixels/sec
Radeon HD 3850 1GB 10688 Mpixels/sec
Difference: 33664 (315%)

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 GTX 970M

Amazon.com

Check prices at:

Radeon HD 3850 1GB

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 GTX 970M Radeon HD 3850 1GB
Manufacturer nVidia AMD
Year October 7 2014 Nov 19, 2007
Code Name GM204 RV670 PRO
Memory 3072 MB 1024 MB
Core Speed 924 MHz 668 MHz
Memory Speed 4000 MHz 1656 MHz
Power (Max TDP) 75 watts 75 watts
Bandwidth 96000 MB/sec 52992 MB/sec
Texel Rate 73920 Mtexels/sec 10688 Mtexels/sec
Pixel Rate 44352 Mpixels/sec 10688 Mpixels/sec
Unified Shaders 1280 320(64x5)
Texture Mapping Units 80 16
Render Output Units 48 16
Bus Type GDDR5 GDDR3
Bus Width 192-bit 256-bit
Fab Process 28 nm 55 nm
Transistors (Unknown) million (Unknown) million
Bus PCIe 3.0 x16 PCIe 2.0 x16/AGP 8x
DirectX Version DirectX 12 DirectX 10.1
OpenGL Version OpenGL 4.5 OpenGL 3.0

Memory Bandwidth: Bandwidth is the maximum amount of data (counted in MB per second) that can be moved across the external memory interface within a second. The number is calculated by multiplying the card's bus width by its memory clock speed. If the card has DDR type RAM, it should be multiplied by 2 again. If it uses DDR5, multiply by ANOTHER 2x. The higher the bandwidth is, the faster 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 processed in one second. This number is calculated by multiplying the total amount of texture units by the core speed of the chip. The better the texel rate, the better the card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels per second.

Pixel Rate: Pixel rate is the most pixels the video card could possibly record to its local memory in one second - measured in millions of pixels per second. The figure is calculated by multiplying the number of Raster Operations Pipelines by the the core speed of the card. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel output rate also depends on many other factors, especially the memory bandwidth of the card - the lower the bandwidth is, the lower the potential to reach the max fill rate.

Display Prices

Hide Prices

GeForce GTX 970M

Amazon.com

Check prices at:

Radeon HD 3850 1GB

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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