Radeon RX 6800S vs GeForce GT 640M

Place in the ranking	839	104
Place by popularity	not in top-100	not in top-100
Power efficiency	5.16	27.66
Architecture	Kepler (2012−2018)	RDNA 2.0 (2020−2024)
GPU code name	GK107	Navi 23
Market segment	Laptop	Laptop
Release date	22 March 2012 (12 years ago)	4 January 2022 (2 years ago)

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	2048
Core clock speed	Up to 625 MHz	1800 MHz
Boost clock speed	645 MHz	2100 MHz
Number of transistors	1,270 million	11,060 million
Manufacturing process technology	28 nm	7 nm
Power consumption (TDP)	32 Watt	100 Watt
Texture fill rate	20.00	268.8
Floating-point processing power	0.48 TFLOPS	8.602 TFLOPS
ROPs	16	64
TMUs	32	128
Ray Tracing Cores	no data	32

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	medium sized	medium sized
Bus support	PCI Express 2.0, PCI Express 3.0	no data
Interface	PCIe 3.0 x16	PCIe 4.0 x8
Supplementary power connectors	no data	None

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\GDDR5	GDDR6
Maximum RAM amount	2 GB	8 GB
Memory bus width	128bit	128 Bit
Memory clock speed	900 MHz	2000 MHz
Memory bandwidth	Up to 64.0 GB/s	256.0 GB/s
Shared memory	-	-

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	No outputs	No outputs
HDMI	+	-
HDCP	+	-
Maximum VGA resolution	Up to 2048x1536	no data

Supported technologies

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

3D Blu-Ray	+	-
Optimus	+	-

API compatibility

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

DirectX	12 API	12 Ultimate (12_2)
Shader Model	5.1	6.5
OpenGL	4.5	4.6
OpenCL	1.1	2.1
Vulkan	1.1.126	1.3
CUDA	+	-

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 640M 2.39

RX 6800S 40.01
+1574%

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 640M 923

RX 6800S 15436
+1572%

3DMark 11 Performance GPU

3DMark 11 is an obsolete DirectX 11 benchmark by Futuremark. It used four tests based on two scenes, one being few submarines exploring the submerged wreck of a sunken ship, the other is an abandoned temple deep in the jungle. All the tests are heavy with volumetric lighting and tessellation, and despite being done in 1280x720 resolution, are relatively taxing. Discontinued in January 2020, 3DMark 11 is now superseded by Time Spy.

GT 640M 1728

RX 6800S 36101
+1989%

3DMark Vantage Performance

3DMark Vantage is an outdated DirectX 10 benchmark using 1280x1024 screen resolution. It taxes the graphics card with two scenes, one depicting a girl escaping some militarized base located within a sea cave, the other displaying a space fleet attack on a defenseless planet. It was discontinued in April 2017, and Time Spy benchmark is now recommended to be used instead.

GT 640M 7425

RX 6800S 82247
+1008%

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 640M 1225

RX 6800S 26511
+2064%

3DMark Cloud Gate GPU

Cloud Gate is an outdated DirectX 11 feature level 10 benchmark that was used for home PCs and basic notebooks. It displays a few scenes of some weird space teleportation device launching spaceships into unknown, using fixed resolution of 1280x720. Just like Ice Storm benchmark, it has been discontinued in January 2020 and replaced by 3DMark Night Raid.

GT 640M 9024

RX 6800S 163510
+1712%

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:

900p	26 −1438%	400−450 +1438%
Full HD	22 −445%	120 +445%
1200p	19 −1479%	300−350 +1479%
1440p	4−5 −1825%	77 +1825%
4K	2−3 −1800%	38 +1800%

FPS performance in popular games

Full HD
Low Preset

Cyberpunk 2077

5−6

−2720%

141
+2720%

Full HD
Medium Preset

Assassin's Creed Odyssey	8−9 −963%	85−90 +963%
Battlefield 5	3−4 −4167%	120−130 +4167%
Call of Duty: Modern Warfare	6−7 −1250%	80−85 +1250%
Cyberpunk 2077	5−6 −2120%	111 +2120%
Far Cry 5	4−5 −2050%	85−90 +2050%
Far Cry New Dawn	6−7 −1550%	95−100 +1550%
Forza Horizon 4	10−12 −1655%	190−200 +1655%
Hitman 3	7−8 −1486%	111 +1486%
Horizon Zero Dawn	20−22 −730%	160−170 +730%
Metro Exodus	1−2 −12600%	120−130 +12600%
Red Dead Redemption 2	5−6 −1760%	90−95 +1760%
Shadow of the Tomb Raider	10−12 −1236%	140−150 +1236%
Watch Dogs: Legion	35−40 −251%	130−140 +251%

Full HD
High Preset

Assassin's Creed Odyssey	8−9 −963%	85−90 +963%
Battlefield 5	3−4 −4167%	120−130 +4167%
Call of Duty: Modern Warfare	6−7 −1250%	80−85 +1250%
Cyberpunk 2077	5−6 −1540%	82 +1540%
Far Cry 5	4−5 −2050%	85−90 +2050%
Far Cry New Dawn	6−7 −1550%	95−100 +1550%
Forza Horizon 4	10−12 −1655%	190−200 +1655%
Hitman 3	7−8 −1457%	109 +1457%
Horizon Zero Dawn	20−22 −730%	160−170 +730%
Metro Exodus	1−2 −12600%	120−130 +12600%
Red Dead Redemption 2	5−6 −1760%	90−95 +1760%
Shadow of the Tomb Raider	10−12 −1709%	199 +1709%
The Witcher 3: Wild Hunt	18 −361%	80−85 +361%
Watch Dogs: Legion	35−40 −251%	130−140 +251%

Full HD
Ultra Preset

Assassin's Creed Odyssey	8−9 −963%	85−90 +963%
Call of Duty: Modern Warfare	6−7 −1250%	80−85 +1250%
Cyberpunk 2077	5−6 −1380%	74 +1380%
Far Cry 5	4−5 −2050%	85−90 +2050%
Forza Horizon 4	10−12 −1655%	190−200 +1655%
Hitman 3	7−8 −1286%	97 +1286%
Horizon Zero Dawn	20−22 −730%	160−170 +730%
Shadow of the Tomb Raider	10−12 −1482%	174 +1482%
The Witcher 3: Wild Hunt	12−14 −608%	92 +608%
Watch Dogs: Legion	35−40 −78.4%	66 +78.4%

Full HD
Epic Preset

Red Dead Redemption 2

5−6

−1760%

90−95
+1760%

1440p
High Preset

Battlefield 5	4−5 −1825%	75−80 +1825%
Far Cry New Dawn	4−5 −1425%	60−65 +1425%

1440p
Ultra Preset

Assassin's Creed Odyssey	2−3 −2050%	40−45 +2050%
Call of Duty: Modern Warfare	1−2 −4600%	45−50 +4600%
Cyberpunk 2077	1−2 −3800%	39 +3800%
Far Cry 5	3−4 −1433%	45−50 +1433%
Hitman 3	7−8 −800%	63 +800%
Horizon Zero Dawn	6−7 −1350%	85−90 +1350%
The Witcher 3: Wild Hunt	2−3 −2800%	55−60 +2800%
Watch Dogs: Legion	14−16 −1286%	190−200 +1286%

1440p
Epic Preset

Red Dead Redemption 2

5−6

−1280%

65−70
+1280%

4K
High Preset

Battlefield 5	0−1	40−45
Far Cry New Dawn	1−2 −3300%	30−35 +3300%

4K
Ultra Preset

Assassin's Creed Odyssey	2−3 −1250%	27−30 +1250%
Assassin's Creed Valhalla	1−2 −3100%	32 +3100%
Call of Duty: Modern Warfare	1−2 −2500%	24−27 +2500%
Far Cry 5	1−2 −2200%	21−24 +2200%
Watch Dogs: Legion	0−1	25

4K
Epic Preset

Red Dead Redemption 2

3−4

−1100%

35−40
+1100%

Full HD
Medium Preset

Assassin's Creed Valhalla

128

+0%

128

+0%

Full HD
High Preset

Assassin's Creed Valhalla

107

+0%

107

+0%

Full HD
Ultra Preset

Assassin's Creed Valhalla

+0%

1440p
Ultra Preset

Assassin's Creed Valhalla	62 +0%	62 +0%
Forza Horizon 4	220−230 +0%	220−230 +0%
Metro Exodus	75−80 +0%	75−80 +0%
Shadow of the Tomb Raider	111 +0%	111 +0%

4K
High Preset

Hitman 3	30−35 +0%	30−35 +0%
Horizon Zero Dawn	180−190 +0%	180−190 +0%
Metro Exodus	50−55 +0%	50−55 +0%
The Witcher 3: Wild Hunt	45−50 +0%	45−50 +0%

4K
Ultra Preset

Cyberpunk 2077	16 +0%	16 +0%
Forza Horizon 4	55−60 +0%	55−60 +0%
Shadow of the Tomb Raider	55−60 +0%	55−60 +0%

This is how GT 640M and RX 6800S compete in popular games:

RX 6800S is 1438% faster in 900p
RX 6800S is 445% faster in 1080p
RX 6800S is 1479% faster in 1200p
RX 6800S is 1825% faster in 1440p
RX 6800S is 1800% faster in 4K

Here's the range of performance differences observed across popular games:

in Metro Exodus, with 1080p resolution and the Medium Preset, the RX 6800S is 12600% faster.

All in all, in popular games:

RX 6800S is ahead in 56 tests (80%)
there's a draw in 14 tests (20%)

Pros & cons summary

Performance score	2.39	40.01
Recency	22 March 2012	4 January 2022
Maximum RAM amount	2 GB	8 GB
Chip lithography	28 nm	7 nm
Power consumption (TDP)	32 Watt	100 Watt

GT 640M has 212.5% lower power consumption.

RX 6800S, on the other hand, has a 1574.1% higher aggregate performance score, an age advantage of 9 years, a 300% higher maximum VRAM amount, and a 300% more advanced lithography process.

The Radeon RX 6800S is our recommended choice as it beats the GeForce GT 640M in performance tests.

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