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NVIDIA GeForce 845M

GM107
Graphics Processor
512
Cores
32
TMUs
16
ROPs
2048 MB
Memory Size
DDR3
Memory Type
64 bit
Bus Width
NVIDIA GM107 Photo
The GeForce 845M is a graphics card by NVIDIA, launched in February 2015. Built on the 28 nm process, and based on the GM107 graphics processor, in its N15S-GT1R variant, the card supports DirectX 12.0. The GM107 graphics processor is an average sized chip with a die area of 148 mm² and 1,870 million transistors. Unlike the fully unlocked GeForce GTX 750 Ti, which uses the same GPU but has all 640 shaders enabled, NVIDIA has disabled some shading units on the GeForce 845M to reach the product's target shader count. It features 512 shading units, 32 texture mapping units and 16 ROPs. NVIDIA has placed 2,048 MB DDR3 memory on the card, which are connected using a 64-bit memory interface. The GPU is operating at a frequency of 863 MHz, memory is running at 1001 MHz.
Being a igp card, its power draw is rated at 45 W maximum. This device has no display connectivity, as it is not designed to have monitors connected to it. GeForce 845M is connected to the rest of the system using a PCI-Express 3.0 x16 interface.

Graphics Processor

GPU Name
GM107
GPU Variant
N15S-GT1R
Architecture
Maxwell
Process Size
28 nm
Transistors
1,870 million
Die Size
148 mm²

Graphics Card

Release Date
Feb 7th, 2015
Generation
NVIDIA GeForce 800M
Production Status
Active
Bus Interface
PCIe 3.0 x16

Relative Performance

9%
11%
14%
17%
21%
22%
27%
35%
35%
39%
41%
41%
48%
51%
54%
56%
58%
60%
64%
68%
69%
71%
74%
84%
85%
87%
88%
88%
89%
89%
95%
100%
100%
GeForce 845M
101%
105%
106%
107%
108%
108%
108%
110%
116%
118%
127%
129%
129%
134%
135%
139%
149%
154%
154%
157%
158%
163%
165%
167%
169%
177%
181%
184%
184%
184%
185%
200%
201%
206%
209%
210%
211%
212%
216%
216%
222%
239%
245%
252%
253%
256%
258%
264%
271%
278%
284%
288%
288%
320%
352%
356%
380%
382%
387%
393%
396%
398%
399%
403%
405%
411%
442%
447%
447%
452%
495%
506%
530%
547%
601%
622%
679%
679%
707%
827%
848%
Based on TPU review data: "Performance Summary" at 1920x1080
Performance estimated based on architecture, shader count and clocks.

Clock Speeds

GPU Clock
863 MHz
Memory Clock
1001 MHz
2002 MHz effective

Memory

Memory Size
2048 MB
Memory Type
DDR3
Memory Bus
64 bit
Bandwidth
16.02 GB/s

Render Config

Shading Units
512
TMUs
32
ROPs
16
SMM Count
4

Theoretical Performance

Pixel Rate
13.81 GPixel/s
Texture Rate
27.62 GTexel/s
FP32 (float) performance
883.7 GFLOPS
FP64 (double) performance
27.62 GFLOPS (1:32)

Board Design

Slot Width
IGP
TDP
45 W
Outputs
No outputs

Graphics Features

DirectX
12.0 (11_0)
OpenGL
4.6
OpenCL
1.2
Vulkan
1.1.73
CUDA
5.0
Shader Model
5.1

Card Notes

all specs unknown

GM107 GPU Notes

PureVideo HD: VP6
VDPAU: Feature Set E