GeForce RTX 3080 Mobile vs GT 640

Place in the ranking	765	91
Place by popularity	not in top-100	not in top-100
Cost-effectiveness evaluation	0.20	no data
Power efficiency	3.27	25.88
Architecture	Kepler (2012−2018)	Ampere (2020−2024)
GPU code name	GK107	GA104
Market segment	Desktop	Laptop
Release date	5 June 2012 (12 years ago)	12 January 2021 (3 years ago)
Launch price (MSRP)	$99	no data

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 cores	384	6144
Core clock speed	902 MHz	1110 MHz
Boost clock speed	no data	1545 MHz
Number of transistors	1,270 million	17,400 million
Manufacturing process technology	28 nm	8 nm
Power consumption (TDP)	65 Watt	115 Watt
Texture fill rate	28.86	296.6
Floating-point processing power	0.6927 TFLOPS	18.98 TFLOPS
ROPs	16	96
TMUs	32	192
Tensor Cores	no data	192
Ray Tracing Cores	no data	48

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 size	no data	large
Interface	PCIe 3.0 x16	PCIe 4.0 x16
Length	145 mm	no data
Width	1-slot	no data
Supplementary power connectors	None	no data

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 type	DDR3	GDDR6
Maximum RAM amount	2 GB	8 GB
Memory bus width	128 Bit	256 Bit
Memory clock speed	891 MHz	1750 MHz
Memory bandwidth	28.51 GB/s	448.0 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 Connectors	1x DVI, 1x HDMI, 1x DisplayPort	No outputs
HDMI	+	-

API compatibility

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

DirectX	12 (11_0)	12 Ultimate (12_2)
Shader Model	5.1	6.5
OpenGL	4.6	4.6
OpenCL	1.2	2.0
Vulkan	1.1.126	1.2
CUDA	3.0	8.6

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.

GT 640 3.05

RTX 3080 Mobile 42.70
+1300%

Passmark

This is the most ubiquitous GPU benchmark. It gives the graphics card a thorough evaluation under various types of load, providing four separate benchmarks for Direct3D versions 9, 10, 11 and 12 (the last being done in 4K resolution if possible), and few more tests engaging DirectCompute capabilities.

GT 640 1175

RTX 3080 Mobile 16473
+1302%

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.

GT 640 1560

RTX 3080 Mobile 27194
+1643%

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:

Full HD	8−9 −1400%	120 +1400%
1440p	5−6 −1380%	74 +1380%
4K	3−4 −1467%	47 +1467%

Cost per frame, $

1080p	12.38	no data
1440p	19.80	no data
4K	33.00	no data

FPS performance in popular games

Full HD
Low Preset

Cyberpunk 2077

134

+0%

134

+0%

Full HD
Medium Preset

Assassin's Creed Odyssey	122 +0%	122 +0%
Assassin's Creed Valhalla	98 +0%	98 +0%
Battlefield 5	130−140 +0%	130−140 +0%
Call of Duty: Modern Warfare	80−85 +0%	80−85 +0%
Cyberpunk 2077	117 +0%	117 +0%
Far Cry 5	85−90 +0%	85−90 +0%
Far Cry New Dawn	100−110 +0%	100−110 +0%
Forza Horizon 4	190−200 +0%	190−200 +0%
Hitman 3	130 +0%	130 +0%
Horizon Zero Dawn	170−180 +0%	170−180 +0%
Metro Exodus	130−140 +0%	130−140 +0%
Red Dead Redemption 2	95−100 +0%	95−100 +0%
Shadow of the Tomb Raider	150−160 +0%	150−160 +0%
Watch Dogs: Legion	130−140 +0%	130−140 +0%

Full HD
High Preset

Assassin's Creed Odyssey	188 +0%	188 +0%
Assassin's Creed Valhalla	79 +0%	79 +0%
Battlefield 5	130−140 +0%	130−140 +0%
Call of Duty: Modern Warfare	80−85 +0%	80−85 +0%
Cyberpunk 2077	99 +0%	99 +0%
Far Cry 5	85−90 +0%	85−90 +0%
Far Cry New Dawn	100−110 +0%	100−110 +0%
Forza Horizon 4	190−200 +0%	190−200 +0%
Hitman 3	117 +0%	117 +0%
Horizon Zero Dawn	170−180 +0%	170−180 +0%
Metro Exodus	144 +0%	144 +0%
Red Dead Redemption 2	96 +0%	96 +0%
Shadow of the Tomb Raider	213 +0%	213 +0%
The Witcher 3: Wild Hunt	85−90 +0%	85−90 +0%
Watch Dogs: Legion	227 +0%	227 +0%

Full HD
Ultra Preset

Assassin's Creed Odyssey	75 +0%	75 +0%
Assassin's Creed Valhalla	69 +0%	69 +0%
Call of Duty: Modern Warfare	80−85 +0%	80−85 +0%
Cyberpunk 2077	90 +0%	90 +0%
Far Cry 5	85−90 +0%	85−90 +0%
Forza Horizon 4	157 +0%	157 +0%
Hitman 3	108 +0%	108 +0%
Horizon Zero Dawn	155 +0%	155 +0%
Shadow of the Tomb Raider	185 +0%	185 +0%
The Witcher 3: Wild Hunt	106 +0%	106 +0%
Watch Dogs: Legion	74 +0%	74 +0%

Full HD
Epic Preset

Red Dead Redemption 2

+0%

1440p
High Preset

Battlefield 5	80−85 +0%	80−85 +0%
Far Cry New Dawn	60−65 +0%	60−65 +0%

1440p
Ultra Preset

Assassin's Creed Odyssey	62 +0%	62 +0%
Assassin's Creed Valhalla	60 +0%	60 +0%
Call of Duty: Modern Warfare	45−50 +0%	45−50 +0%
Cyberpunk 2077	30−35 +0%	30−35 +0%
Far Cry 5	45−50 +0%	45−50 +0%
Forza Horizon 4	230−240 +0%	230−240 +0%
Hitman 3	76 +0%	76 +0%
Horizon Zero Dawn	121 +0%	121 +0%
Metro Exodus	90 +0%	90 +0%
Shadow of the Tomb Raider	141 +0%	141 +0%
The Witcher 3: Wild Hunt	79 +0%	79 +0%
Watch Dogs: Legion	177 +0%	177 +0%

1440p
Epic Preset

Red Dead Redemption 2

+0%

4K
High Preset

Battlefield 5	40−45 +0%	40−45 +0%
Far Cry New Dawn	35−40 +0%	35−40 +0%
Hitman 3	47 +0%	47 +0%
Horizon Zero Dawn	33 +0%	33 +0%
Metro Exodus	74 +0%	74 +0%
The Witcher 3: Wild Hunt	70 +0%	70 +0%

4K
Ultra Preset

Assassin's Creed Odyssey	43 +0%	43 +0%
Assassin's Creed Valhalla	38 +0%	38 +0%
Call of Duty: Modern Warfare	27−30 +0%	27−30 +0%
Cyberpunk 2077	14−16 +0%	14−16 +0%
Far Cry 5	24−27 +0%	24−27 +0%
Forza Horizon 4	87 +0%	87 +0%
Shadow of the Tomb Raider	79 +0%	79 +0%
Watch Dogs: Legion	33 +0%	33 +0%

4K
Epic Preset

Red Dead Redemption 2

+0%

This is how GT 640 and RTX 3080 Mobile compete in popular games:

RTX 3080 Mobile is 1400% faster in 1080p
RTX 3080 Mobile is 1380% faster in 1440p
RTX 3080 Mobile is 1467% faster in 4K

All in all, in popular games:

there's a draw in 72 tests (100%)

Pros & cons summary

Performance score	3.05	42.70
Recency	5 June 2012	12 January 2021
Maximum RAM amount	2 GB	8 GB
Chip lithography	28 nm	8 nm
Power consumption (TDP)	65 Watt	115 Watt

GT 640 has 76.9% lower power consumption.

RTX 3080 Mobile, on the other hand, has a 1300% higher aggregate performance score, an age advantage of 8 years, a 300% higher maximum VRAM amount, and a 250% more advanced lithography process.

The GeForce RTX 3080 Mobile is our recommended choice as it beats the GeForce GT 640 in performance tests.

Be aware that GeForce GT 640 is a desktop card while GeForce RTX 3080 Mobile is a notebook one.

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