Radeon RX 7900M vs RX 6600M

Place in performance ranking	139	34
Place by popularity	not in top-100	not in top-100
Architecture	RDNA 2 (2020−2022)	RDNA 3
GPU code name	R21M-E65-70	Navi 31
Market segment	Laptop	Laptop
Release date	1 September 2020 (3 years ago)	19 October 2023 (less than a year ago)

Detailed specifications

General performance parameters such as number of shaders, GPU core base clock and boost clock speeds, manufacturing process, texturing and calculation speed. These parameters indirectly speak of performance, but for precise assessment you have to consider their benchmark and gaming test results. Note that power consumption of some graphics cards can well exceed their nominal TDP, especially when overclocked.

Pipelines / CUDA cores	1792	4608
Core clock speed	2068 MHz	1825 MHz
Boost clock speed	2177 MHz	2090 MHz
Number of transistors	11,060 million	57,700 million
Manufacturing process technology	7 nm	5 nm
Power consumption (TDP)	100 Watt (50 - 100 Watt TGP)	180 Watt (160 - 200 Watt TGP)
Texture fill rate	235.8	601.9

Form factor & compatibility

Information on Radeon RX 6600M and Radeon RX 7900M compatibility with other computer components. Useful when choosing a future computer configuration or upgrading an existing one. For notebook video cards it's notebook size, connection slot and bus, if the video card is inserted into a slot instead of being soldered to the notebook motherboard.

Laptop size	medium sized	large
Interface	PCIe 4.0 x8	PCIe 4.0 x16
Supplementary power connectors	None	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	8 GB	16 GB
Memory bus width	128 Bit	256 Bit
Memory clock speed	14000 MHz	18000 MHz
Memory bandwidth	256.0 GB/s	576.0 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

Portable Device Dependent

API compatibility

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

DirectX	12 Ultimate (12_2)	12 Ultimate (12_2)
Shader Model	6.5	6.7
OpenGL	4.6	4.6
OpenCL	2.1	2.2
Vulkan	1.2	1.3

Synthetic benchmark performance

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

Combined synthetic benchmark score

This is our combined benchmark performance 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 6600M 35.24

RX 7900M 56.43
+60.1%

RX 7900M outperforms RX 6600M by 60% based on our aggregated benchmark results.

Passmark

This is the most ubiquitous GPU benchmark, part of Passmark PerformanceTest suite. 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.

Benchmark coverage: 25%

RX 6600M 13636

RX 7900M 21837
+60.1%

RX 7900M outperforms RX 6600M by 60% in Passmark.

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.

Benchmark coverage: 17%

RX 6600M 31868

RX 7900M 59943
+88.1%

RX 7900M outperforms RX 6600M by 88% in 3DMark 11 Performance GPU.

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.

Benchmark coverage: 14%

RX 6600M 23525

RX 7900M 50241
+114%

RX 7900M outperforms RX 6600M by 114% in 3DMark Fire Strike Graphics.

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	100 −58%	158 +58%
1440p	55 −105%	113 +105%
4K	30 −157%	77 +157%

FPS performance in popular games

Full HD
Low Preset

Cyberpunk 2077

110

−54.5%

170−180
+54.5%

Full HD
Medium Preset

Assassin's Creed Odyssey	108 +20%	90−95 −20%
Assassin's Creed Valhalla	95 −3.2%	95−100 +3.2%
Battlefield 5	100−110 −35.2%	140−150 +35.2%
Call of Duty: Modern Warfare	95−100 −58.9%	150−160 +58.9%
Cyberpunk 2077	90 −55.6%	140−150 +55.6%
Far Cry 5	116 −16.4%	130−140 +16.4%
Far Cry New Dawn	100 −18%	110−120 +18%
Forza Horizon 4	202 +25.5%	160−170 −25.5%
Hitman 3	154 −15.6%	170−180 +15.6%
Horizon Zero Dawn	124 +0.8%	120−130 −0.8%
Red Dead Redemption 2	55−60 −61.4%	90−95 +61.4%
Shadow of the Tomb Raider	120 −25%	150−160 +25%
Watch Dogs: Legion	120 +21.2%	95−100 −21.2%

Full HD
High Preset

Assassin's Creed Odyssey	106 +17.8%	90−95 −17.8%
Assassin's Creed Valhalla	79 −24.1%	95−100 +24.1%
Battlefield 5	100−110 −35.2%	140−150 +35.2%
Call of Duty: Modern Warfare	95−100 −58.9%	150−160 +58.9%
Cyberpunk 2077	72 −52.8%	110−120 +52.8%
Far Cry 5	108 −25%	130−140 +25%
Far Cry New Dawn	96 −22.9%	110−120 +22.9%
Forza Horizon 4	199 +23.6%	160−170 −23.6%
Hitman 3	144 −23.6%	170−180 +23.6%
Horizon Zero Dawn	98 −25.5%	120−130 +25.5%
Metro Exodus	80 −35%	100−110 +35%
Red Dead Redemption 2	55−60 −61.4%	90−95 +61.4%
Shadow of the Tomb Raider	110 −84.5%	203 +84.5%
The Witcher 3: Wild Hunt	142 −14.1%	160−170 +14.1%
Watch Dogs: Legion	107 +8.1%	95−100 −8.1%

Full HD
Ultra Preset

Assassin's Creed Odyssey	79 −13.9%	90−95 +13.9%
Assassin's Creed Valhalla	69 −42%	95−100 +42%
Battlefield 5	100−110 −35.2%	140−150 +35.2%
Cyberpunk 2077	61 −55.7%	95−100 +55.7%
Far Cry 5	101 −26.7%	128 +26.7%
Far Cry New Dawn	89 −32.6%	110−120 +32.6%
Forza Horizon 4	168 +4.3%	160−170 −4.3%
The Witcher 3: Wild Hunt	85 −97.6%	168 +97.6%
Watch Dogs: Legion	59 −67.8%	95−100 +67.8%

1440p
High Preset

Call of Duty: Modern Warfare	55−60 −75.4%	100−105 +75.4%
Hitman 3	60−65 −82.8%	110−120 +82.8%
Horizon Zero Dawn	66 −33.3%	85−90 +33.3%
Metro Exodus	47 −44.7%	65−70 +44.7%
Red Dead Redemption 2	27−30 −78.6%	50−55 +78.6%
Shadow of the Tomb Raider	67 −107%	139 +107%

1440p
Ultra Preset

Assassin's Creed Odyssey	51 −21.6%	60−65 +21.6%
Assassin's Creed Valhalla	52 −28.8%	65−70 +28.8%
Battlefield 5	75−80 −45.3%	100−110 +45.3%
Cyberpunk 2077	36 −52.8%	55−60 +52.8%
Far Cry 5	90 −36.7%	123 +36.7%
Far Cry New Dawn	85 −16.5%	95−100 +16.5%
Forza Horizon 4	128 +2.4%	120−130 −2.4%
The Witcher 3: Wild Hunt	62 −53.2%	95−100 +53.2%
Watch Dogs: Legion	42 −35.7%	55−60 +35.7%

4K
High Preset

Call of Duty: Modern Warfare	30−35 −90.3%	55−60 +90.3%
Hitman 3	35−40 −82.9%	60−65 +82.9%
Horizon Zero Dawn	17 −218%	50−55 +218%
Metro Exodus	28 −50%	40−45 +50%
Red Dead Redemption 2	18−20 −68.4%	30−35 +68.4%
Shadow of the Tomb Raider	31 −145%	76 +145%
The Witcher 3: Wild Hunt	44 −164%	116 +164%

4K
Ultra Preset

Assassin's Creed Odyssey	29 −44.8%	40−45 +44.8%
Assassin's Creed Valhalla	27 −51.9%	40−45 +51.9%
Battlefield 5	40−45 −62.8%	70−75 +62.8%
Cyberpunk 2077	14 −50%	21−24 +50%
Far Cry 5	44 −134%	103 +134%
Far Cry New Dawn	48 −35.4%	65−70 +35.4%
Forza Horizon 4	74 −13.5%	80−85 +13.5%
Watch Dogs: Legion	21 −52.4%	30−35 +52.4%

This is how RX 6600M and RX 7900M compete in popular games:

RX 7900M is 58% faster in 1080p
RX 7900M is 105% faster in 1440p
RX 7900M is 157% faster in 4K

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

in Forza Horizon 4, with 1080p resolution and the Medium Preset, the RX 6600M is 25% faster than the RX 7900M.
in Horizon Zero Dawn, with 4K resolution and the High Preset, the RX 7900M is 218% faster than the RX 6600M.

All in all, in popular games:

RX 6600M is ahead in 9 tests (15%)
RX 7900M is ahead in 53 tests (85%)

Pros & cons summary

Performance score	35.24	56.43
Recency	1 September 2020	19 October 2023
Maximum RAM amount	8 GB	16 GB
Chip lithography	7 nm	5 nm
Power consumption (TDP)	100 Watt	180 Watt