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GeForce GTX 965M vs Radeon HD 3850 X2

Intro

The GeForce GTX 965M uses a 28 nm design. nVidia has clocked the core frequency at 944 MHz. The GDDR5 RAM works at a frequency of 1000 MHz on this particular card. It features 1024 SPUs as well as 64 Texture Address Units and 32 ROPs.

Compare those specs to the Radeon HD 3850 X2, which has clock speeds of 668 MHz on the GPU, and 828 MHz on the 512 MB of GDDR3 RAM. It features 320(64x5) SPUs along with 16 Texture Address Units and 16 ROPs.

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Power Usage and Theoretical Benchmarks

Memory Bandwidth

In theory, the Radeon HD 3850 X2 will be 66% faster than the GeForce GTX 965M in general, due to its greater data rate. (explain)

Radeon HD 3850 X2 105984 MB/sec
GeForce GTX 965M 64000 MB/sec
Difference: 41984 (66%)

Texel Rate

The GeForce GTX 965M should be a lot (about 183%) more effective at AF than the Radeon HD 3850 X2. (explain)

GeForce GTX 965M 60416 Mtexels/sec
Radeon HD 3850 X2 21376 Mtexels/sec
Difference: 39040 (183%)

Pixel Rate

The GeForce GTX 965M is much (approximately 41%) more effective at AA than the Radeon HD 3850 X2, and also should be capable of handling higher screen resolutions more effectively. (explain)

GeForce GTX 965M 30208 Mpixels/sec
Radeon HD 3850 X2 21376 Mpixels/sec
Difference: 8832 (41%)

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.

One or more cards in this comparison are multi-core. This means that their bandwidth, texel and pixel rates are theoretically doubled - this does not mean the card will actually perform twice as fast, but only that it should in theory be able to. Actual game benchmarks will give a more accurate idea of what it's capable of.

Price Comparison

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GeForce GTX 965M

Amazon.com

Check prices at:

Radeon HD 3850 X2

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 X2
Manufacturer nVidia AMD
Year January 5 2015 Apr 4, 2008
Code Name GM204 RV670 PRO
Memory 2048 MB 512 MB (x2)
Core Speed 944 MHz 668 MHz (x2)
Memory Speed 4000 MHz 1656 MHz (x2)
Power (Max TDP) 60 watts (Unknown) watts
Bandwidth 64000 MB/sec 105984 MB/sec
Texel Rate 60416 Mtexels/sec 21376 Mtexels/sec
Pixel Rate 30208 Mpixels/sec 21376 Mpixels/sec
Unified Shaders 1024 320(64x5) (x2)
Texture Mapping Units 64 16 (x2)
Render Output Units 32 16 (x2)
Bus Type GDDR5 GDDR3
Bus Width 128-bit 256-bit (x2)
Fab Process 28 nm 55 nm
Transistors (Unknown) million (Unknown) million
Bus PCIe 3.0 x16 PCIe 2.0 x16/(internal PCIe 1.1 x16)
DirectX Version DirectX 12 DirectX 10.1
OpenGL Version OpenGL 4.5 OpenGL 3.0

Memory Bandwidth: Bandwidth is the max amount of data (in units of megabytes per second) that can be moved over the external memory interface in a second. It's calculated by multiplying the bus width by its memory speed. In the case of DDR RAM, the result should be multiplied by 2 again. If it uses DDR5, multiply by 4 instead. The better the bandwidth is, the better the card will be in general. It especially helps with anti-aliasing, HDR and higher screen resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that are applied in one second. This number is worked out by multiplying the total number of texture units of the card by the core speed of the chip. The better the texel rate, the better the graphics card will be at handling 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 the graphics card could possibly write to the local memory in a second - measured in millions of pixels per second. The figure is worked out by multiplying the number of colour ROPs by the clock 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 is also dependant on lots of other factors, most notably the memory bandwidth of the card - the lower the bandwidth is, the lower the potential to get to the maximum fill rate.

Display Prices

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GeForce GTX 965M

Amazon.com

Check prices at:

Radeon HD 3850 X2

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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