Radeon RX 6600M vs RX 6800 XT

Place in the ranking	28	137
Place by popularity	not in top-100	not in top-100
Cost-effectiveness evaluation	50.50	no data
Power efficiency	15.06	24.92
Architecture	RDNA 2.0 (2020−2024)	RDNA 2.0 (2020−2024)
GPU code name	Navi 21	Navi 23
Market segment	Desktop	Laptop
Release date	28 October 2020 (4 years ago)	31 May 2021 (3 years ago)
Launch price (MSRP)	$649	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	4608	1792
Core clock speed	1825 MHz	2068 MHz
Boost clock speed	2250 MHz	2416 MHz
Number of transistors	26,800 million	11,060 million
Manufacturing process technology	7 nm	7 nm
Power consumption (TDP)	300 Watt	100 Watt
Texture fill rate	648.0	270.6
Floating-point processing power	20.74 TFLOPS	8.659 TFLOPS
ROPs	128	64
TMUs	288	112
Ray Tracing Cores	72	28

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	medium sized
Interface	PCIe 4.0 x16	PCIe 4.0 x8
Length	267 mm	no data
Width	2-slot	no data
Supplementary power connectors	2x 8-pin	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	GDDR6	GDDR6
Maximum RAM amount	16 GB	8 GB
Memory bus width	256 Bit	128 Bit
Memory clock speed	2000 MHz	1750 MHz
Memory bandwidth	512.0 GB/s	224.0 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	1x HDMI, 2x DisplayPort, 1x USB Type-C	No outputs
HDMI	+	-

API compatibility

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

DirectX	12 Ultimate (12_2)	12 Ultimate (12_2)
Shader Model	6.5	6.5
OpenGL	4.6	4.6
OpenCL	2.1	2.1
Vulkan	1.2	1.3

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.

RX 6800 XT 64.89
+81.3%

RX 6600M 35.80

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.

RX 6800 XT 25034
+81.3%

RX 6600M 13809

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.

RX 6800 XT 52046
+63.3%

RX 6600M 31868

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.

RX 6800 XT 96516
+32.8%

RX 6600M 72686

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.

RX 6800 XT 49735
+111%

RX 6600M 23525

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.

RX 6800 XT 193053
+33.5%

RX 6600M 144612

3DMark Ice Storm GPU

Ice Storm Graphics is an obsolete benchmark, part of 3DMark suite. Ice Storm was used to measure entry level laptops and Windows-based tablets performance. It utilizes DirectX 11 feature level 9 to display a battle between two space fleets near a frozen planet in 1280x720 resolution. Discontinued in January 2020, it is now superseded by 3DMark Night Raid.

RX 6800 XT 504438
+5.2%

RX 6600M 479404

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	207 +109%	99 −109%
1440p	143 +170%	53 −170%
4K	93 +200%	31 −200%

Cost per frame, $

1080p	3.14	no data
1440p	4.54	no data
4K	6.98	no data

FPS performance in popular games

Full HD
Low Preset

Cyberpunk 2077

120−130
+13.6%

110

−13.6%

Full HD
Medium Preset

Assassin's Creed Odyssey	130−140 +24.1%	108 −24.1%
Assassin's Creed Valhalla	158 +66.3%	95 −66.3%
Battlefield 5	200−210 +79.1%	110−120 −79.1%
Call of Duty: Modern Warfare	110−120 +61.1%	70−75 −61.1%
Cyberpunk 2077	120−130 +38.9%	90 −38.9%
Far Cry 5	110−120 +47.4%	75−80 −47.4%
Far Cry New Dawn	150−160 +76.4%	85−90 −76.4%
Forza Horizon 4	230−240 +28%	180−190 −28%
Hitman 3	132 +76%	75−80 −76%
Horizon Zero Dawn	240−250 +58.9%	150−160 −58.9%
Metro Exodus	144 +24.1%	110−120 −24.1%
Red Dead Redemption 2	122 +43.5%	85−90 −43.5%
Shadow of the Tomb Raider	260−270 +111%	120−130 −111%
Watch Dogs: Legion	309 +151%	120−130 −151%

Full HD
High Preset

Assassin's Creed Odyssey	130−140 −48.5%	199 +48.5%
Assassin's Creed Valhalla	135 +70.9%	79 −70.9%
Battlefield 5	200−210 +79.1%	110−120 −79.1%
Call of Duty: Modern Warfare	110−120 +61.1%	70−75 −61.1%
Cyberpunk 2077	120−130 +73.6%	72 −73.6%
Far Cry 5	110−120 +47.4%	75−80 −47.4%
Far Cry New Dawn	150−160 +76.4%	85−90 −76.4%
Forza Horizon 4	230−240 +28%	180−190 −28%
Hitman 3	136 +81.3%	75−80 −81.3%
Horizon Zero Dawn	240−250 +58.9%	150−160 −58.9%
Metro Exodus	144 +24.1%	110−120 −24.1%
Red Dead Redemption 2	110−120 +40%	85−90 −40%
Shadow of the Tomb Raider	355 +105%	173 −105%
The Witcher 3: Wild Hunt	130−140 +85.1%	70−75 −85.1%
Watch Dogs: Legion	309 +151%	120−130 −151%

Full HD
Ultra Preset

Assassin's Creed Odyssey	130−140 +69.6%	79 −69.6%
Assassin's Creed Valhalla	118 +71%	69 −71%
Call of Duty: Modern Warfare	110−120 +61.1%	70−75 −61.1%
Cyberpunk 2077	120−130 +105%	61 −105%
Far Cry 5	110−120 +47.4%	75−80 −47.4%
Forza Horizon 4	230−240 +38.7%	168 −38.7%
Hitman 3	122 +62.7%	75−80 −62.7%
Horizon Zero Dawn	279 +108%	134 −108%
Shadow of the Tomb Raider	302 +97.4%	153 −97.4%
The Witcher 3: Wild Hunt	160 +88.2%	85 −88.2%
Watch Dogs: Legion	112 +89.8%	59 −89.8%

Full HD
Epic Preset

Red Dead Redemption 2

120
+41.2%

85−90

−41.2%

1440p
High Preset

Battlefield 5	140−150 +119%	65−70 −119%
Far Cry New Dawn	100−110 +88.9%	50−55 −88.9%

1440p
Ultra Preset

Assassin's Creed Odyssey	75−80 +47.1%	51 −47.1%
Assassin's Creed Valhalla	98 +88.5%	52 −88.5%
Call of Duty: Modern Warfare	75−80 +85.4%	40−45 −85.4%
Cyberpunk 2077	65−70 +83.3%	36 −83.3%
Far Cry 5	75−80 +85.4%	40−45 −85.4%
Forza Horizon 4	270−280 +34.2%	200−210 −34.2%
Hitman 3	114 +153%	45−50 −153%
Horizon Zero Dawn	215 +119%	98 −119%
Metro Exodus	112 +31.8%	85 −31.8%
Shadow of the Tomb Raider	222 +122%	100 −122%
The Witcher 3: Wild Hunt	110−120 +83.9%	62 −83.9%
Watch Dogs: Legion	314 +73.5%	180−190 −73.5%

1440p
Epic Preset

Red Dead Redemption 2

116
+90.2%

60−65

−90.2%

4K
High Preset

Battlefield 5	75−80 +123%	35−40 −123%
Far Cry New Dawn	60−65 +121%	27−30 −121%
Hitman 3	55−60 +93.1%	27−30 −93.1%
Horizon Zero Dawn	220−230 +31.8%	170−180 −31.8%
Metro Exodus	126 +186%	40−45 −186%
The Witcher 3: Wild Hunt	110 +150%	44 −150%

4K
Ultra Preset

Assassin's Creed Odyssey	50−55 +79.3%	29 −79.3%
Assassin's Creed Valhalla	65 +141%	27 −141%
Call of Duty: Modern Warfare	45−50 +114%	21−24 −114%
Cyberpunk 2077	30−35 +121%	14 −121%
Far Cry 5	45−50 +125%	20−22 −125%
Forza Horizon 4	100−110 +43.2%	74 −43.2%
Shadow of the Tomb Raider	133 +156%	52 −156%
Watch Dogs: Legion	49 +133%	21 −133%

4K
Epic Preset

Red Dead Redemption 2

76
+145%

30−35

−145%

This is how RX 6800 XT and RX 6600M compete in popular games:

RX 6800 XT is 109% faster in 1080p
RX 6800 XT is 170% faster in 1440p
RX 6800 XT is 200% faster in 4K

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

in Metro Exodus, with 4K resolution and the High Preset, the RX 6800 XT is 186% faster.
in Assassin's Creed Odyssey, with 1080p resolution and the High Preset, the RX 6600M is 49% faster.

All in all, in popular games: