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NVIDIA GeForce 845M

The NVIDIA GeForce 845M is a mid-range, DirectX 11-compatible graphics card for laptops unveiled in spring 2014. It is one of the first cards based on Nvidia's new Maxwell architecture, but is still manufactured in 28 nm. In addition to a version based on GM107 (presumably partially deactivated, 128-bit, DDR3 memory), there could also be another version using the GM108 chip (64-bit, GDDR5 memory). Both models should offer approximately the same performance.

Architecture

Compared to Kepler, Maxwell has been optimized in several details to increase power efficiency. Smaller Streaming Multiprocessors (SMM) with only 128 ALUs (Kepler: 192) and an optimized scheduler should lead to better utilization of the shaders. Nvidia promises that a Maxwell SMM with 128 ALUs can offer 90 percent of the performance of a Kepler SMX with 192 ALUs.

Another optimization is the massively enlarged L2 cache (GM107: 2 MB). The larger size can process some of the memory traffic to allow for a relatively narrow memory interface without significantly reducing performance.

Similar to Fermi and Kepler, the GM107 and GM108 support DirectX 11.2 with feature level 11.0 only.

Performance

Thanks to the 128-bit memory interface (respectively the GDDR5 memory of the GM108 model), the GeForce 845M should offer a significantly higher performance than the GeForce 840M. We expect the card to be slightly in front of the old GT 750M (DDR3 version). Many games of 2013/2014 (Tomb Raider or BioShock Infinite, etc.) can be played fluently in 1366 x 768 and high detail settings. However, very demanding games such as Crysis 3 or Battlefield 4 will require lower resolutions and/or details.

Features

GM107 integrates the sixth generation of the PureVideo HD video engine (VP6), offering a better decoding performance for H.264 and MPEG-2 videos. Of course, VP6 supports all features of previous generations (4K support, PIP, video encoding via NVENC API). Unfortunately, HDMI 2.0 is still not supported.

Power Consumption

The power consumption of the GeForce 845M should be in a range of about 30 - 35 Watts. Therefore, the card is best suited for 14-inch laptops or larger. The 800M series also supports Optimus to automatically switch between an integrated graphics card and the Nvidia GPU.

ManufacturerNVIDIA
GeForce 800M Series
GeForce 845M128 Bit

GeForce 840M

384 @ 1029 MHz64 Bit @ 2000 MHz

GeForce 830M

256 @ 1029 - 1150 (Boost) MHz64 Bit @ 1800 MHz

GeForce 825M

384 @ 850 MHz64 Bit @ 1800 MHz

GeForce 820M

96 @ 775 MHz64 Bit @ 1800 MHz
ArchitectureMaxwell
Pipelinesunified
Memory Bus Width128 Bit
Memory TypeDDR3
Max. Amount of Memory2048 MB
Shared Memoryno
DirectXDirectX 11, Shader 5.0
Transistors1870 Million
technology28 nm
FeaturesGPU Boost 2.0, Optimus, PhysX, CUDA, GeForce Experience
Notebook Sizemedium sized
Date of Announcement12.03.2014
* The specified clock rates are only guidelines for the manufacturer and can be altered by them.

Benchmarks

No benchmarks found for this graphics card.

For more games that might be playable and a list of all games and graphics cards visit our Gaming List

#0 Table tx_nbc2_benchcache_gpu alreday found +0.036s ... 0.036s

#1 About to fill cache table +0s ... 0.036s

#2 Filled cache +8.02s ... 8.055s

#3 Before gaming benchmark output +0.163s ... 8.219s

#4 return log +0.002s ... 8.221s

No reviews found for this graphics card.

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Class 1
GeForce GTX 590
GeForce GTX 580
Radeon HD 6970
GeForce GTX 570
GeForce GTX 560 Ti
Radeon HD 5850
Radeon HD 7770
Radeon HD 7770
GeForce GTX 460 768MB
Radeon HD 6790
Radeon HD 5770
GeForce GTX 550 Ti
Class 2
GeForce GTS 450
Radeon HD 4850
Class 3
Radeon HD 5670
GeForce GT 240
Radeon R6 M255DX
GeForce GT 430
Radeon HD 5570
GeForce GT 220
Radeon HD 6450 GDDR5
Class 4
Radeon R3 (Mullins/Beema)
Mali-T760 MP6
Class 5
Radeon HD 4350
GeForce G 107M *
Chrome9HD *
Class 6
unknown *

* Approximate position of the graphics adapter

> Notebook / Laptop Reviews and News > FAQ / Tips / Technics > Comparison of Laptop Graphics Cards > NVIDIA GeForce 845M
Author: Klaus Hinum (Update: 2014-03-13)