GT 840M Benchmarks and Info

Benchmark Suite Scores

2017Lowest
Bioshock Infinite, High@768p
Thief, Very high@768p
Battlefield 4 Campaign, Medium@768p
34.70
* Scores are average FPS
GT 840M Specs
ModelGT 840M (Maxwell I)
CoreGM108, 384 cores @ 1.03GHZ - 1.15GHZ
VRAM2GB/4GB DDR3 @ 1GHZ (2GHZ eff.), 64-bit.
GFLOPS (w/Boost)883 (FP32)
Memory bandwidth14 GB/s
TMUs24
ROPs8
Power~30W

The GT 840M is a low tier GPU based on the Maxwell I GM108 core and using GDDR5, released in 2014. It was a big upgrade from previous generation GT 740M which was based on the previous Kepler architecture. At its time, the 840M cost effectiveness was rather low due to being available in laptops priced at around $500-$600 the least. Compared to new low-tier GPUs like the Nvidia MX150 and the AMD Vega 8 iGPU inside the mobile Ryzen 2500U, it’s vastly outperformed while prices are the same, if the laptop is carefully picked.

The performance of the GT 840M before it, is enough for low-medium graphics gaming@768p/1080p, but some of the more demanding 3D games won’t run smoothly even at 768p. For example, Fornite at medium settings will run at around 35-40FPS. The newer Nvidia MX150 is at least 50% faster and often is twice as fast for gaming, so a GT 840M and even the 940M/X GDDR5 version competitiveness is low compared to a $450-$500 MX150 based laptop, and the GDDR5 version is the faster of them.

The GT 840M was incarnated into the 940M which was incarnated into the 940MX which incarnated into the MX130 which is still in use in 2018, but performance for DDR3 version are basically the same.

  • GT 840M
  • GT 940M
  • GT 940MX GDDR5 (GM107)
{"labels":["Battlefield 4 Campaign, Highest @768p","Thief, Highest @768p","Bioshock Infinite, Highest @768p"],"series":[["20.000","16.000","23.000"],["18.000","17.000","25.000"],["17.000","24.000","38.000"]],"chart_gpus":[130998,141414,149018,149021,147133]}

At this point, it would be better to look for other GPUs, even for low priced machines. Laptop with the Nvidia MX150 GPU or the AMD 2500U CPU (with Vega 8 based iGPU) will be much preferable.

worstavgbest

Crysis 3

768p
Medium(768p)
system spec, texture resolution: "medium" preset; SMAA 2Tx
161616
Low(768p)
313131
details
ML
Acer V3-572G | GT 840M 2GB DDR3 | I5-5200U
Intel Core I5-5200U (Broadwell 2c / 4t, 2.2 - 2.7GHZ)
16
31
system spec, texture resolution: "medium" preset; SMAA 2Tx

Bioshock Infinite

DX11
768p
Highest(768p)
"Ultra" preset
232323
Very high(768p)
"Very High" preset
323232
High(768p)
"High" preset
363636
details
HSTVHH
Acer V3-572G | GT 840M 2GB DDR3 | I5-5200U
Intel Core I5-5200U (Broadwell 2c / 4t, 2.2 - 2.7GHZ)
23
32
36
"Ultra" preset"Very High" preset"High" preset

Thief

768p
Highest(768p)
161616
Very high(768p)
191919
details
HSTVH
Acer V3-572G | GT 840M 2GB DDR3 | I5-5200U
Intel Core I5-5200U (Broadwell 2c / 4t, 2.2 - 2.7GHZ)
16
19

Total War : Rome II

768p
Highest(768p)
171717
Very high(768p)
242424
High(768p)
292929
Medium(768p)
383838
details
HSTVHHM
Acer V3-572G | GT 840M 2GB DDR3 | I5-5200U
Intel Core I5-5200U (Broadwell 2c / 4t, 2.2 - 2.7GHZ)
17
24
29
38

Alien : Isolation

DX11
768p
Highest(768p)
292929
Medium(768p)
404040
details
HSTM
Acer V3-572G | GT 840M 2GB DDR3 | I5-5200U
Intel Core I5-5200U (Broadwell 2c / 4t, 2.2 - 2.7GHZ)
29
40

Civilization : Beyond Earth

768p
Highest(768p)
222222
Very high(768p)
222222
High(768p)
262626
details
HSTVHH
Acer V3-572G | GT 840M 2GB DDR3 | I5-5200U
Intel Core I5-5200U (Broadwell 2c / 4t, 2.2 - 2.7GHZ)
22
22
26

Metro : Last Light

DX11
768p
Highest(768p)
101010
Very high(768p)
191919
High(768p)
212121
Medium(768p)
303030
details
HSTVHHM
Acer V3-572G | GT 840M 2GB DDR3 | I5-5200U
Intel Core I5-5200U (Broadwell 2c / 4t, 2.2 - 2.7GHZ)
10
19
21
30

Dragon Age: Inquisition

DX11
768p
Highest(768p)
111111
High(768p)
303030
Medium(768p)
333333
details
HSTHM
Acer V3-572G | GT 840M 2GB DDR3 | I5-5200U
Intel Core I5-5200U (Broadwell 2c / 4t, 2.2 - 2.7GHZ)
11
30
33

The Elders Scrolls V : Skyrim

1080p
Highest(1080p)
191919
Very high(1080p)
282828
High(1080p)
383838
Medium(1080p)
555555
details
HSTVHHM
Acer V3-572G | GT 840M 2GB DDR3 | I5-5200U
Intel Core I5-5200U (Broadwell 2c / 4t, 2.2 - 2.7GHZ)
19
28
38
55

Battlefield 4 Campaign

DX11
768p
Highest(768p)
202020
High(768p)
313131
Medium(768p)
494949
details
HSTHM
Acer V3-572G | GT 840M 2GB DDR3 | I5-5200U
Intel Core I5-5200U (Broadwell 2c / 4t, 2.2 - 2.7GHZ)
20
31
49

Shadow Of Mordor

768p
Highest(768p)
151515
Very high(768p)
191919
High(768p)
202020
Medium(768p)
242424
Low(768p)
303030
details
HSTVHHML
Acer V3-572G | GT 840M 2GB DDR3 | I5-5200U
Intel Core I5-5200U (Broadwell 2c / 4t, 2.2 - 2.7GHZ)
15
19
20
24
30

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