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GeForce GTX 965M vs Radeon HD 3850 512MB

Intro

The GeForce GTX 965M comes with a clock speed of 944 MHz and a GDDR5 memory frequency of 1000 MHz. It also makes use of a 128-bit memory bus, and uses a 28 nm design. It features 1024 SPUs, 64 Texture Address Units, and 32 ROPs.

Compare all that to the Radeon HD 3850 512MB, which has a core clock frequency of 668 MHz and a GDDR3 memory speed of 828 MHz. It also features a 256-bit bus, and uses a 55 nm design. It is comprised of 320(64x5) SPUs, 16 TAUs, and 16 ROPs.

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 965M 60 Watts
Radeon HD 3850 512MB 75 Watts
Difference: 15 Watts (25%)

Memory Bandwidth

In theory, the GeForce GTX 965M should be quite a bit faster than the Radeon HD 3850 512MB in general. (explain)

GeForce GTX 965M 64000 MB/sec
Radeon HD 3850 512MB 52992 MB/sec
Difference: 11008 (21%)

Texel Rate

The GeForce GTX 965M is a lot (about 465%) better at texture filtering than the Radeon HD 3850 512MB. (explain)

GeForce GTX 965M 60416 Mtexels/sec
Radeon HD 3850 512MB 10688 Mtexels/sec
Difference: 49728 (465%)

Pixel Rate

The GeForce GTX 965M should be much (more or less 183%) more effective at full screen anti-aliasing than the Radeon HD 3850 512MB, and also will be capable of handling higher resolutions more effectively. (explain)

GeForce GTX 965M 30208 Mpixels/sec
Radeon HD 3850 512MB 10688 Mpixels/sec
Difference: 19520 (183%)

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 965M

Amazon.com

Check prices at:

Radeon HD 3850 512MB

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 965M Radeon HD 3850 512MB
Manufacturer nVidia AMD
Year January 5 2015 Nov 19, 2007
Code Name GM204 RV670 PRO
Memory 2048 MB 512 MB
Core Speed 944 MHz 668 MHz
Memory Speed 4000 MHz 1656 MHz
Power (Max TDP) 60 watts 75 watts
Bandwidth 64000 MB/sec 52992 MB/sec
Texel Rate 60416 Mtexels/sec 10688 Mtexels/sec
Pixel Rate 30208 Mpixels/sec 10688 Mpixels/sec
Unified Shaders 1024 320(64x5)
Texture Mapping Units 64 16
Render Output Units 32 16
Bus Type GDDR5 GDDR3
Bus Width 128-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 largest amount of information (measured in megabytes per second) that can be moved across the external memory interface within a second. It's worked out by multiplying the interface width by its memory speed. If the card has DDR type memory, it must be multiplied by 2 again. If it uses 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 amount of texture map elements (texels) that are processed per second. This number is calculated by multiplying the total number of texture units of the card by the core speed of the chip. The better this number, the better the 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 that the graphics chip can possibly write to its local memory in one second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the amount of colour ROPs by the the card's clock speed. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel rate also depends on quite a few other factors, most notably the memory bandwidth - the lower the memory bandwidth is, the lower the potential to reach the maximum fill rate.

Display Prices

Hide Prices

GeForce GTX 965M

Amazon.com

Check prices at:

Radeon HD 3850 512MB

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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