NVIDIA GeForce 860M Laptop Maxwell GPU Benchmarks Appear

by Hilbert Hagedoorn on: 03/05/2014 06:40 PM | source: | 11 comment(s)

Currently the only two desktop product based on Nvidia's Maxwell are the GTX 750 and GTX 750 Ti. However the GeForce 800M series of mobile GPUs will obviously get Maxwell as well, and a 860M Laptop has been benchmarked. Results in 3DMark 11 show a score of a cool 5,339 points, which definitely above the previous model GeForce GTX 770M.

That places the 860M mpbile GPU say in-between a GeForce GTX 760 Ti Boost and perhaps a AMD Radeon R7 260X. The GTX 860M should be a 640 shader cores GPU with 40 TMUs (texture mapping units) and 16 ROPs (raster operating units). It will get 3 GB of GDDR5 VRAM (5.0 Gbps is tied to a 192 bits wide memory bus. From the looks of it the part is running 540 MHz.

The 860M should be pretty energy friendly alright, not bad huh ?

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moab600
Senior Member

Posts: 6431
Joined: 2004-09-30

#4777393 Posted on: 03/05/2014 07:01 PM

u either meants between 750TI 650TI boost and not 760TI Boost

nicugoalkeper
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Posts: 907
Joined: 2006-04-13

#4777398 Posted on: 03/05/2014 07:18 PM

Nice can't wait.

Fox2232
Senior Member

Posts: 11809
Joined: 2012-07-20

#4777403 Posted on: 03/05/2014 07:28 PM

Don't compare it with desktop.

Score is just above GTX770M.

GTX770M (75W) which is:

192bit, 960shaders, 800MHz Core + 4GHz memory, 24/80 ROPs/TMUs

While GTX860M (35~45W based on complexity & clocks) is:

128bit, 640shaders, 540MHz Core + 5GHz memory, 16/40 ROPs/TMUs

This results in:

GTX770M:

pixel fr. 19.2GP/s, Texture fr. 64.0GT/s, mem. bandwidth 96GB/s

GTX860M:

pixel fr.  8.6GP/s, Texture fr. 18.6GT/s, mem. bandwidth 80GB/s

We can omit memory bandwidth here as it's quite similar.
But unless maxwell have same performance with 1/2 of pixel fillrate and 1/3 of texture fillrate, this score is fake.

Edit: and btw, it has 1/2 of die size and transistor count of GTX770M, which means it's dirty cheap to manufacture.

Edit2: Clock to clock comparison for performance per transistor results: 860M delivers at same clocks 2.95x higher performance per transistor than 770M.

Mohammad.Taheri
Senior Member

Posts: 256
Joined: 2010-11-07

#4777417 Posted on: 03/05/2014 07:57 PM

why the card still dx 11 not 11.2?

Denial
Senior Member

Posts: 13803
Joined: 2004-05-16

#4777420 Posted on: 03/05/2014 08:06 PM

why the card still dx 11 not 11.2?

Nvidia isn't fully supporting 11.1/11.2.

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