GeForce GT 640 vs GTX 980M SLI

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Aggregate performance score

We've compared GeForce GTX 980M SLI with GeForce GT 640, including specs and performance data.

GTX 980M SLI
2014
2x 8 GB GDDR5, 200 Watt
24.59
+706%

GTX 980M SLI outperforms GT 640 by a whopping 706% based on our aggregate benchmark results.

Primary details

GPU architecture, market segment, value for money and other general parameters compared.

Place in the ranking222767
Place by popularitynot in top-100not in top-100
Cost-effectiveness evaluationno data0.20
Power efficiency8.573.27
ArchitectureMaxwell (2014−2017)Kepler (2012−2018)
GPU code nameno dataGK107
Market segmentLaptopDesktop
Release date7 October 2014 (10 years ago)5 June 2012 (12 years ago)
Launch price (MSRP)no data$99

Cost-effectiveness evaluation

Performance to price ratio. The higher, the better.

no data

Detailed specifications

General parameters such as number of shaders, GPU core base clock and boost clock speeds, manufacturing process, texturing and calculation speed. Note that power consumption of some graphics cards can well exceed their nominal TDP, especially when overclocked.

Pipelines / CUDA cores3072384
Core clock speed1038 MHz902 MHz
Boost clock speed1127 MHzno data
Number of transistors2x 5200 Million1,270 million
Manufacturing process technology28 nm28 nm
Power consumption (TDP)200 Watt65 Watt
Texture fill rateno data28.86
Floating-point processing powerno data0.6927 TFLOPS
ROPsno data16
TMUsno data32

Form factor & compatibility

Information on compatibility with other computer components. Useful when choosing a future computer configuration or upgrading an existing one. For desktop graphics cards it's interface and bus (motherboard compatibility), additional power connectors (power supply compatibility).

Laptop sizelargeno data
Interfaceno dataPCIe 3.0 x16
Lengthno data145 mm
Widthno data1-slot
Supplementary power connectorsno dataNone
SLI options+-

VRAM capacity and type

Parameters of VRAM installed: its type, size, bus, clock and resulting bandwidth. Integrated GPUs have no dedicated video RAM and use a shared part of system RAM.

Memory typeGDDR5DDR3
Maximum RAM amount2x 8 GB2 GB
Memory bus width2x 256 Bit128 Bit
Memory clock speed5000 MHz891 MHz
Memory bandwidthno data28.51 GB/s
Shared memory-no data

Connectivity and outputs

Types and number of video connectors present on the reviewed GPUs. As a rule, data in this section is precise only for desktop reference ones (so-called Founders Edition for NVIDIA chips). OEM manufacturers may change the number and type of output ports, while for notebook cards availability of certain video outputs ports depends on the laptop model rather than on the card itself.

Display Connectorsno data1x DVI, 1x HDMI, 1x DisplayPort
HDMI-+

Supported technologies

Supported technological solutions. This information will prove useful if you need some particular technology for your purposes.

Optimus+-

API compatibility

List of supported 3D and general-purpose computing APIs, including their specific versions.

DirectX12_112 (11_0)
Shader Modelno data5.1
OpenGLno data4.6
OpenCLno data1.2
Vulkan+1.1.126
CUDA+3.0

Synthetic benchmark performance

Non-gaming benchmark results comparison. The combined score is measured on a 0-100 point scale.


Combined synthetic benchmark score

This is our combined benchmark score. We are regularly improving our combining algorithms, but if you find some perceived inconsistencies, feel free to speak up in comments section, we usually fix problems quickly.

GTX 980M SLI 24.59
+706%
GT 640 3.05

3DMark Fire Strike Graphics

Fire Strike is a DirectX 11 benchmark for gaming PCs. It features two separate tests displaying a fight between a humanoid and a fiery creature made of lava. Using 1920x1080 resolution, Fire Strike shows off some realistic graphics and is quite taxing on hardware.

GTX 980M SLI 18632
+1094%
GT 640 1560

Gaming performance

Let's see how good the compared graphics cards are for gaming. Particular gaming benchmark results are measured in FPS.

Average FPS across all PC games

Here are the average frames per second in a large set of popular games across different resolutions:

900p135
+744%
16−18
−744%
Full HD110
+817%
12−14
−817%

Cost per frame, $

1080pno data8.25

FPS performance in popular games

Full HD
Low Preset

Cyberpunk 2077 40−45
+900%
4−5
−900%

Full HD
Medium Preset

Assassin's Creed Odyssey 50−55
+800%
6−7
−800%
Assassin's Creed Valhalla 40−45
+740%
5−6
−740%
Battlefield 5 80−85
+710%
10−11
−710%
Call of Duty: Modern Warfare 50−55
+733%
6−7
−733%
Cyberpunk 2077 40−45
+900%
4−5
−900%
Far Cry 5 55−60
+714%
7−8
−714%
Far Cry New Dawn 65−70
+713%
8−9
−713%
Forza Horizon 4 140−150
+806%
16−18
−806%
Hitman 3 50−55
+733%
6−7
−733%
Horizon Zero Dawn 110−120
+714%
14−16
−714%
Metro Exodus 85−90
+750%
10−11
−750%
Red Dead Redemption 2 60−65
+814%
7−8
−814%
Shadow of the Tomb Raider 80−85
+740%
10−11
−740%
Watch Dogs: Legion 100−110
+758%
12−14
−758%

Full HD
High Preset

Assassin's Creed Odyssey 50−55
+800%
6−7
−800%
Assassin's Creed Valhalla 40−45
+740%
5−6
−740%
Battlefield 5 80−85
+710%
10−11
−710%
Call of Duty: Modern Warfare 50−55
+733%
6−7
−733%
Cyberpunk 2077 40−45
+900%
4−5
−900%
Far Cry 5 55−60
+714%
7−8
−714%
Far Cry New Dawn 65−70
+713%
8−9
−713%
Forza Horizon 4 140−150
+806%
16−18
−806%
Hitman 3 50−55
+733%
6−7
−733%
Horizon Zero Dawn 110−120
+714%
14−16
−714%
Metro Exodus 85−90
+750%
10−11
−750%
Red Dead Redemption 2 60−65
+814%
7−8
−814%
Shadow of the Tomb Raider 80−85
+740%
10−11
−740%
The Witcher 3: Wild Hunt 50−55
+800%
6−7
−800%
Watch Dogs: Legion 100−110
+758%
12−14
−758%

Full HD
Ultra Preset

Assassin's Creed Odyssey 50−55
+800%
6−7
−800%
Assassin's Creed Valhalla 40−45
+740%
5−6
−740%
Call of Duty: Modern Warfare 50−55
+733%
6−7
−733%
Cyberpunk 2077 40−45
+900%
4−5
−900%
Far Cry 5 55−60
+714%
7−8
−714%
Forza Horizon 4 140−150
+806%
16−18
−806%
Hitman 3 50−55
+733%
6−7
−733%
Horizon Zero Dawn 110−120
+714%
14−16
−714%
Shadow of the Tomb Raider 80−85
+740%
10−11
−740%
The Witcher 3: Wild Hunt 50−55
+800%
6−7
−800%
Watch Dogs: Legion 100−110
+758%
12−14
−758%

Full HD
Epic Preset

Red Dead Redemption 2 60−65
+814%
7−8
−814%

1440p
High Preset

Battlefield 5 45−50
+840%
5−6
−840%
Far Cry New Dawn 35−40
+850%
4−5
−850%

1440p
Ultra Preset

Assassin's Creed Odyssey 24−27
+767%
3−4
−767%
Assassin's Creed Valhalla 24−27
+1100%
2−3
−1100%
Call of Duty: Modern Warfare 27−30
+833%
3−4
−833%
Cyberpunk 2077 16−18
+1500%
1−2
−1500%
Far Cry 5 27−30
+867%
3−4
−867%
Forza Horizon 4 140−150
+788%
16−18
−788%
Hitman 3 30−33
+900%
3−4
−900%
Horizon Zero Dawn 50−55
+750%
6−7
−750%
Metro Exodus 45−50
+840%
5−6
−840%
Shadow of the Tomb Raider 50−55
+800%
6−7
−800%
The Witcher 3: Wild Hunt 30−33
+900%
3−4
−900%
Watch Dogs: Legion 140−150
+775%
16−18
−775%

1440p
Epic Preset

Red Dead Redemption 2 40−45
+720%
5−6
−720%

4K
High Preset

Battlefield 5 24−27
+1100%
2−3
−1100%
Far Cry New Dawn 18−20
+850%
2−3
−850%
Hitman 3 18−20
+850%
2−3
−850%
Horizon Zero Dawn 120−130
+807%
14−16
−807%
Metro Exodus 27−30
+833%
3−4
−833%
The Witcher 3: Wild Hunt 27−30
+800%
3−4
−800%

4K
Ultra Preset

Assassin's Creed Odyssey 14−16
+1400%
1−2
−1400%
Assassin's Creed Valhalla 12−14
+1200%
1−2
−1200%
Call of Duty: Modern Warfare 14−16
+1300%
1−2
−1300%
Cyberpunk 2077 6−7 0−1
Far Cry 5 14−16
+1300%
1−2
−1300%
Forza Horizon 4 30−35
+750%
4−5
−750%
Shadow of the Tomb Raider 30−33
+900%
3−4
−900%
Watch Dogs: Legion 10−12
+1000%
1−2
−1000%

4K
Epic Preset

Red Dead Redemption 2 21−24
+950%
2−3
−950%

This is how GTX 980M SLI and GT 640 compete in popular games:

  • GTX 980M SLI is 744% faster in 900p
  • GTX 980M SLI is 817% faster in 1080p

Pros & cons summary


Performance score 24.59 3.05
Recency 7 October 2014 5 June 2012
Power consumption (TDP) 200 Watt 65 Watt

GTX 980M SLI has a 706.2% higher aggregate performance score, and an age advantage of 2 years.

GT 640, on the other hand, has 207.7% lower power consumption.

The GeForce GTX 980M SLI is our recommended choice as it beats the GeForce GT 640 in performance tests.

Be aware that GeForce GTX 980M SLI is a notebook card while GeForce GT 640 is a desktop one.


Should you still have questions concerning choice between the reviewed GPUs, ask them in Comments section, and we shall answer.

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NVIDIA GeForce GTX 980M SLI
GeForce GTX 980M SLI
NVIDIA GeForce GT 640
GeForce GT 640

Comparisons with similar GPUs

We selected several comparisons of graphics cards with performance close to those reviewed, providing you with more options to consider.

Community ratings

Here you can see the user ratings of the compared graphics cards, as well as rate them yourself.


3.3 53 votes

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Questions & comments

Here you can ask a question about this comparison, agree or disagree with our judgements, or report an error or mismatch.