NVIDIA Unleashes The GeForce GTX 800M Mobility GPU Lineup – Notebooks Get Full GeForce Experience Features

Hassan Mujtaba
Posted Mar 12, 2014
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NVIDIA has officially launched their GeForce GTX 800M Mobility family which introduces new and improved GPUs based on the Kepler and Maxwell core architecture. The GeForce GTX 800M series also features support for the NVIDIA GeForce Experience utilities such as GameStream and ShadowPlay which delivers better tools for games streaming and video recording using NVIDIA’s GPU core architecture.NVIDIA GeForce GTX 800M Series

NVIDIA Unleashes The GeForce GTX 800M Mobility GPU Lineup

The initial launch lineup of the GeForce GTX 800M series includes a mix of both Kepler and Maxwell chips. The top GeForce GTX 880M, GeForce GTX 870M, GeForce GTX 860M (Kepler) feature the Kepler core architecture while the GeForce GTX 860M, GeForce GTX 850M and the yet to be introduced, GTX 840M, GTX 830M models feature the first generation Maxwell core architecture.

The GeForce GTX 880M is technically the same chip as the GeForce GTX 680MX and GTX 780M with 1536 Cuda Cores, 128 TMUs and 32 ROPs but it has some key improvements. The VRAM has been expanded to 8 GB GDDR5 and the clock speeds have been bumped to 933 MHz base and 954 MHz boost although the memory is clocked at 5 GHz effective rate. The memory runs along a 256-bit interface pumping out 160 GB/s bandwidth though we don’t know how the higher VRAM would benefit users in terms of raw performance numbers.

NVIDIA GeForce GTX 880M Specifications:

  NVIDIA GeForce GTX 680MX NVIDIA GeForce GTX 780M NVIDIA GeForce GTX 880M
GPU Codename GK104 GK104 GK104
GPU Process 28nm 28nm 28nm
Cores 1536 CUDA 1536 CUDA 1536 CUDA
Core Clock 720 MHz 823 MHz 933 MHz
Boost Clock N/A N/A 954 MHz
VRAM 2 GB GDDR5 4 GB GDDR5 8 GB GDDR5
Memory Bus 256-bit 256-bit 256-bit
Memory Clock 5.0 GHz 5.0 GHz 5.0 GHz
Memory Bandwidth 160 GB/s 160 GB/s 160 GB/s

Next up we have the GeForce GTX 870M which is another Kepler rebrand and a cut down version of the GeForce GTX 880M chip. The GeForce GTX 870M features the GK104 core with 1344 CUDA cores, 96 TMUs, 24 ROPs, a clock speed of 941 MHz core and 967 MHz boost. The chip features a massive 6 GB GDDR5 memory which runs across a 192-bit bus at speeds of 5 GHz effective (1250 MHz QDR) pumping out 120.0 GB/s bandwidth. We again see no use of the extra VRAM unless the user is playing 2K games.

There’s also the GeForce GTX 860M which is apparently a rebranded GK104 chip but also the second card to use the same naming scheme. The GeForce GTX 860M features the GK104 core with 1152 CUDA cores, 112 TMUs, 24 ROPs, a clock speed of 797 MHz core and 842 MHz boost. The chip features a massive 2 GB GDDR5 memory which runs across a 128-bit bus at speeds of 5 GHz effective (1250 MHz QDR) pumping out 104.0 GB/s bandwidth.

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NVIDIA GeForce GTX 870M Specifications:

NVIDIA GeForce GTX 770M NVIDIA GeForce GTX 860M NVIDIA GeForce GTX 870M
GPU Codename GK106 GK104 GK104
GPU Process 28nm 28nm 28nm
Cores 960 CUDA 1152 CUDA 1344 CUDA
Core Clock 811 MHz 797 MHz 941 MHz
Boost Clock N/A 842 MHz 967 MHz
VRAM 3 GB GDDR5 2 GB GDDR5 6 GB GDDR5
Memory Bus 192-bit 128-bit 192-bit
Memory Clock 4.0 GHz 5.0 GHz 5.0 GHz
Memory Bandwidth 96 GB/s 104 GB/s 120 GB/s

Meet The Mobile Maxwell – GeForce GTX 860M and GTX 850M

Power, Performance and EfficiencyGeForce GTX 860M

The most interesting chips out of the bunch are the GeForce GTX 860M and the GeForce GTX 850M considering that these are the first mobile chips to feature the Maxwell core architecture. There are a few low end chips such as the GeForce GTX 840M and GeForce GTX 830M which are supposedly based on the GeForce Maxwell GM108 core but the 860M and 850M are confirmed to be based on Maxwell architecture.

For specifications, we are looking at the fully enabled GM107 core as featured on the GeForce GTX 750 Ti. The GeForce GTX 860M features 640 CUDA Cores, 40 Texture Mapping Units and 16 Raster operators. The 860M packs a 2 GB GDDR5 memory buffer which runs across a 128-bit wide bus at a frequency of 5 GHz effective. So we are looking at 80.2 GB/s bandwidth throughput. The core clocks is maintained at 1029 MHz stock plus boost and the overclocking potential of these chips would be great since the Maxwell core has already proved to be a great overclocker.

Compared to the GeForce GTX 760M which featured the Kepler GK106 core with 768 CUDA Cores and a 2 GB GDDR5 memory that ran across a 128-bit bus, the GeForce GTX 860M is a slight downgrade if the core count is to be compared but it should be pointed that Maxwell cores are more powerful then Kepler cores and the GM107 is alot efficient requiring around 40-45 Watts of power compared to the 55-60W for the Kepler GK106 core. So we are looking at better performance from the GeForce GTX 860M along with a much power efficient design that requires lower power and runs cooler.

The GeForce GTX 850M is the mobile equivalent of the GeForce GTX 750 (Non-Ti) just as the GeForce GTX 860M is the mobile equivalent of the GeForce GTX 750 Ti. These cards show massive improvement to their predecessors in both power efficiency and performance due to the Maxwell architecture with 860M showing a 40% and 850M showing a 60% improvement. The GeForce GTX 870M also shows a decent performance increase over its GTX 700M series predecessors since its based on GK104 core compared to GK106 core on the previous chips. Overall, we are looking at a mix of refreshes and some new additions which is good to see on the mobility front and these chips will end up with several upcoming notebooks featuring Haswell refresh and Broadwell processors arriving in 2014.

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NVIDIA Maxwell GeForce GTX 800M Mobility Specifications:

  NVIDIA GeForce GTX 860M NVIDIA GeForce GTX 850M
GPU Maxwell GM107 Maxwell GM107
Process 28nm 28nm
Cores 640 CUDA (1029 MHz+) 512 CUDA (876 MHz+)
Memory 2 GB GDDR5 2 GB GDDR5
Bus Interface 128-bit 128-bit
TDP 50W 40W
Package GB4B-128 GB4B-128

NVIDIA GeForce GTX 800M Battery Boost and GeForce Experience Features:

Gaming notebooks deliver great gaming in portable designs, but haven’t been able to deliver that great gaming experience while on battery. Most gamers play between 1 to 2 hours on average, something that current notebooks haven’t been able to deliver… until now.NVIDIA GeForce GTX 800M Battery Boost

With today’s launch of the GeForce GTX 800M Series, notebook gamers can get up to twice as much game time when unplugged, while still receiving the 30+ FPS experience they demand.

To achieve this feat Battery Boost adjusts the power needs of the GPU, CPU, and memory automatically to deliver a user-targeted frame rate (30 FPS by default). Each notebook component is adjusted in real-time, maximizing efficiency, and ensuring buttery smooth gameplay, even when the action heats up during high-intensity moments. If the gamer demands faster frame rates or longer battery time, Battery Boost can be adjusted using a simple slider via GeForce Experience.

For even greater control, GeForce Experience has been upgraded to include per-game Adjustable Optimal Playable Setting functionality for Battery and AC gaming modes, enabling GeForce GTX 800M gamers to stretch their battery life even further on GeForce Experience supported titles. Combined, Battery Boost and Adjustable Optimal Playable Settings put complete control over image quality, performance, and battery life into the hands of the owner, allowing each individual to craft their perfect experience. NVIDIANVIDIA GeForce GTX 800M Battery Boost Performance

NVIDIA GeForce GTX 800M Mobility Family Slides:NVIDIA GeForce GTX 800M EfficiencyNVIDIA GeForce GTX 800M GameStream NVIDIA GeForce GTX 800M ShadowPlay NVIDIA GeForce GTX 800M vs Intel Iris

NVIDIA GeForce GTX 800M Mobility Family Performance Charts:NVIDIA GeForce GTX 800M GPU Performance GeForce GTX 880M Performance GeForce GTX 870M Performance GeForce GTX 860M Performance GeForce GTX 850M Performance

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