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NVIDIA GeForce GT 640M

Graphics Processor
GK107
Cores
384
TMUs
32
ROPs
16
Memory Size
2 GB
Memory Type
DDR3
Bus Width
128 bit
The GeForce GT 640M was a mobile graphics chip by NVIDIA, launched in March 2012. Built on the 28 nm process, and based on the GK107 graphics processor, in its N13P-GS variant, the chip supports DirectX 12. Even though it supports DirectX 12, the feature level is only 11_0, which can be problematic with newer DirectX 12 titles. The GK107 graphics processor is an average sized chip with a die area of 118 mm² and 1,270 million transistors. It features 384 shading units, 32 texture mapping units, and 16 ROPs. NVIDIA has paired 2,048 MB DDR3 memory with the GeForce GT 640M, which are connected using a 128-bit memory interface. The GPU is operating at a frequency of 625 MHz, memory is running at 900 MHz.
Its power draw is rated at 32 W maximum. This device has no display connectivity, as it is not designed to have monitors connected to it. Rather it is intended for use in laptop/notebooks and will use the output of the host mobile device. GeForce GT 640M is connected to the rest of the system using a PCI-Express 3.0 x16 interface.

Graphics Processor

GPU Name
GK107
GPU Variant
N13P-GS
Architecture
Kepler
Foundry
TSMC
Process Size
28 nm
Transistors
1,270 million
Die Size
118 mm²

Mobile Graphics

Release Date
Mar 22nd, 2012
Generation
GeForce 600M
Predecessor
GeForce 500M
Successor
GeForce 700M
Production
End-of-life
Bus Interface
PCIe 3.0 x16
Reviews
2 in our database

Relative Performance

16%
GeForce 210
21%
GeForce 9400 GT
26%
Radeon HD 4550
33%
Radeon HD 5450
39%
Radeon HD 6450
41%
GeForce GT 520
51%
GeForce GT 220
66%
GeForce GT 430
67%
Radeon HD 5570
73%
Radeon HD 4670
77%
GeForce GT 440
78%
GeForce GT 240
90%
GeForce 9600 GT
96%
Radeon HD 5670
100%
GeForce GT 640M
103%
GeForce GT 640
106%
GeForce 9800 GT
110%
Radeon HD 6670
114%
Radeon HD 4830
122%
Radeon HD 4770
128%
Radeon HD 4850
131%
GeForce GTS 250
135%
GeForce GTS 450
140%
Radeon HD 5750
160%
Radeon HD 7750
161%
Radeon HD 5770
164%
GeForce GTX 260
166%
Radeon HD 4870
166%
Radeon Vega 8
168%
GeForce GTX 550 Ti
169%
GeForce GTX 650
179%
Radeon HD 5830
188%
Radeon HD 6790
191%
Radeon HD 4890
199%
GeForce GTX 460
200%
Radeon RX Vega 11
202%
GeForce GT 1030
204%
GeForce GTX 275
205%
Radeon HD 7770 GHz Edition
205%
GeForce GTX 280
209%
GeForce GTX 465
219%
Radeon HD 6850
223%
GeForce GTX 285
239%
Radeon HD 5850
244%
GeForce GTX 650 Ti
244%
Radeon HD 7790
254%
Radeon RX 550
255%
GeForce GTX 470
264%
Radeon HD 6870
282%
Radeon HD 5870
291%
GeForce GTX 560 Ti
292%
Radeon HD 4870 X2
297%
GeForce GTX 750 Ti
299%
Radeon HD 6950
309%
GeForce GTX 295
313%
GeForce GTX 650 Ti Boost
315%
Radeon HD 7850
321%
GeForce GTX 480
336%
Radeon HD 6970
342%
Radeon R7 265
348%
Radeon RX 460
348%
Radeon R7 370
349%
GeForce GTX 660
350%
GeForce GTX 570
356%
Radeon RX 560
378%
GeForce GTX 950
381%
Radeon HD 7870 GHz Edition
390%
Radeon R9 270X
395%
GeForce GTX 660 Ti
397%
GeForce GTX 580
400%
GeForce GTX 1050
401%
Radeon HD 7950
409%
Radeon HD 5970
420%
GeForce GTX 760
453%
GeForce GTX 670
464%
GeForce GTX 960
476%
Radeon R9 380
479%
Radeon R9 285
484%
Radeon HD 7970
489%
GeForce GTX 680
500%
GeForce GTX 1050 Ti
513%
GeForce GTX 770
525%
Radeon HD 6990
538%
Radeon R9 280X
545%
GeForce GTX 590
546%
Radeon HD 7970 GHz Edition
605%
GeForce GTX 780
626%
GeForce GTX 1650
665%
Radeon RX 470
674%
Radeon R9 290
711%
Radeon RX 570
720%
Radeon R9 390
723%
Radeon R9 290X
733%
GeForce GTX 970
743%
GeForce GTX TITAN
753%
GeForce GTX 780 Ti
763%
Radeon R9 390X
767%
Radeon HD 7990
771%
Radeon RX 480
777%
GeForce GTX 690
798%
GeForce GTX 1060 6 GB
809%
Radeon RX 5500 OEM
819%
Radeon RX 580
825%
Radeon RX 5500 XT
836%
GeForce GTX 980
843%
GeForce GTX 1650 SUPER
846%
Radeon R9 FURY
884%
Radeon RX 590
931%
Radeon R9 295X2
936%
GeForce GTX 1660
947%
Radeon R9 FURY X
963%
GeForce GTX 980 Ti
988%
GeForce GTX TITAN X
1052%
GeForce GTX 1660 SUPER
1075%
GeForce GTX 1070
1075%
GeForce GTX 1660 Ti
1144%
Radeon RX Vega 56
1214%
GeForce GTX 1070 Ti
1232%
Radeon RX 5600 XT
1248%
Radeon RX Vega 64
1266%
GeForce GTX 1080
1266%
GeForce RTX 2060
1318%
Radeon RX 5700
1422%
GeForce RTX 2060 SUPER
1474%
GeForce RTX 2070
1503%
GeForce RTX 3060
1508%
Radeon RX 5700 XT
1526%
Radeon VII
1565%
TITAN X Pascal
1612%
GeForce GTX 1080 Ti
1630%
GeForce RTX 2070 SUPER
1734%
GeForce RTX 2080
1838%
GeForce RTX 2080 SUPER
1865%
GeForce RTX 3060 Ti
1977%
Radeon RX 6700 XT
2029%
GeForce RTX 2080 Ti
2049%
GeForce RTX 3070
2272%
Radeon RX 6800
2617%
Radeon RX 6800 XT
2657%
GeForce RTX 3080
2772%
Radeon RX 6900 XT
2947%
GeForce RTX 3090
Based on TPU review data: "Performance Summary" at 1920x1080, 4K for 2080 Ti and faster.
Performance estimated based on architecture, shader count and clocks.

Clock Speeds

GPU Clock
625 MHz
Memory Clock
900 MHz
1800 Mbps effective

Memory

Memory Size
2 GB
Memory Type
DDR3
Memory Bus
128 bit
Bandwidth
28.80 GB/s

Render Config

Shading Units
384
TMUs
32
ROPs
16
SMX Count
2
L1 Cache
16 KB (per SMX)
L2 Cache
256 KB

Theoretical Performance

Pixel Rate
5.000 GPixel/s
Texture Rate
20.00 GTexel/s
FP32 (float) performance
480.0 GFLOPS
FP64 (double) performance
20.00 GFLOPS (1:24)

Board Design

TDP
32 W
Outputs
No outputs

Graphics Features

DirectX
12 (11_0)
OpenGL
4.6
OpenCL
1.2
Vulkan
1.1
CUDA
3.0
Shader Model
5.1

Card Notes

???MHz core and 1000MHz memory clocks for the GDDR5 version, 625MHz/900MHz for the DDR3 version.

GK107 GPU Notes

L1 Cache is configurable from 16 KB up to 48 KB per SMX