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NVIDIA GeForce 840M

GM108
Graphics Processor
384
Cores
16
TMUs
8
ROPs
1024 MB
Memory Size
DDR3
Memory Type
64 bit
Bus Width
NVIDIA GeForce 840M Image NVIDIA GM108 Image
The GeForce 840M is a graphics card by NVIDIA, launched in March 2014. Built on the 28 nm process, and based on the GM108 graphics processor, in its N15S-GT variant, the card supports DirectX 12.0. It features 384 shading units, 16 texture mapping units and 8 ROPs. NVIDIA has placed 1,024 MB DDR3 memory on the card, which are connected using a 64-bit memory interface. The GPU is operating at a frequency of 1029 MHz, which can be boosted up to 1124 MHz, memory is running at 1001 MHz.
We recommend the NVIDIA GeForce 840M for gaming with highest details at resolutions up to, and including, 1280x720.
Being a igp card, its power draw is rated at 33 W maximum. GeForce 840M is connected to the rest of the system using a PCIe 3.0 x8 interface.

Graphics Processor

GPU Name: GM108
GPU Variant: N15S-GT
Architecture: Maxwell
Process Size: 28 nm
Transistors: unknown
Die Size: unknown

Graphics Card

Released: Mar 12th, 2014
Production Status: Active
Bus Interface: PCIe 3.0 x8

Relative Performance

9%
12%
14%
18%
22%
23%
28%
37%
37%
40%
43%
44%
50%
53%
57%
59%
61%
63%
68%
71%
73%
75%
78%
89%
89%
91%
92%
93%
94%
100%
100%
GeForce 840M
105%
106%
110%
113%
114%
114%
116%
122%
124%
133%
135%
135%
142%
147%
156%
161%
162%
165%
166%
172%
174%
175%
178%
186%
190%
193%
194%
194%
210%
212%
217%
220%
221%
223%
227%
227%
234%
251%
258%
265%
266%
269%
272%
285%
292%
299%
303%
303%
336%
375%
400%
402%
407%
413%
418%
420%
424%
426%
432%
464%
470%
470%
487%
532%
556%
575%
630%
743%
870%
Based on TPU review data: "Performance Summary" at 1920x1080
GeForce 840M performance estimated based on architecture, shader count and clocks.

Clock Speeds

GPU Clock: 1029 MHz
Boost Clock: 1124 MHz
Memory Clock: 1001 MHz
2002 MHz effective

Memory

Memory Size: 1024 MB
Memory Type: DDR3
Memory Bus: 64 bit
Bandwidth: 16.02 GB/s

Render Config

Shading Units: 384
TMUs: 16
ROPs: 8
SMM Count: 3
Pixel Rate: 8.23 GPixel/s
Texture Rate: 16.46 GTexel/s
Floating-point performance: 790.3 GFLOPS

Board Design

Slot Width: IGP
TDP: 33 W

Graphics Features

DirectX: 12.0
OpenGL: 4.5
OpenCL: 1.2
CUDA: 5.0
Shader Model: 5.0

Card Notes

some specs unknown