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GeForce GTX 970M vs Radeon HD 3850 1GB

Intro

The GeForce GTX 970M has a clock speed of 924 MHz and a GDDR5 memory speed of 1000 MHz. It also features a 192-bit memory bus, and makes use of a 28 nm design. It features 1280 SPUs, 80 TAUs, and 48 ROPs.

Compare 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 runs at a speed of 828 MHz on this particular card. It features 320(64x5) SPUs along with 16 Texture Address Units and 16 ROPs.

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Power Usage and Theoretical Benchmarks

Both cards have the same power consumption.

Memory Bandwidth

Performance-wise, the GeForce GTX 970M should theoretically be much superior to the Radeon HD 3850 1GB in general. (explain)

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

Texel Rate

The GeForce GTX 970M will be a lot (about 592%) faster with regards to 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 running with lots of anti-aliasing is important to you, then the GeForce GTX 970M is the winner, by a large margin. (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: Memory bandwidth is the maximum amount of information (measured in megabytes per second) that can be transported past the external memory interface in one second. It is calculated by multiplying the bus width by the speed of its memory. If the card has DDR memory, it must be multiplied by 2 again. If DDR5, multiply by ANOTHER 2x. The better the memory bandwidth, the faster the card will be in general. It especially helps with anti-aliasing, High Dynamic Range and high resolutions.

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

Pixel Rate: Pixel rate is the maximum number of pixels the graphics card could possibly write to the local memory per second - measured in millions of pixels per second. The number is worked out by multiplying the number of Raster Operations Pipelines by the the card's clock speed. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel fill rate also depends on many other factors, most notably the memory bandwidth of the card - the lower the bandwidth is, the lower the ability to get to the maximum 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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