Radeon RX 6600 vs RX 580 Mobile

Place in the ranking	277	107
Place by popularity	not in top-100	15
Cost-effectiveness evaluation	24.31	68.10
Power efficiency	13.65	20.66
Architecture	GCN 4.0 (2016−2020)	RDNA 2.0 (2020−2024)
GPU code name	Polaris 20	Navi 23
Market segment	Laptop	Desktop
Release date	18 April 2017 (7 years ago)	13 October 2021 (3 years ago)
Launch price (MSRP)	$301.69	$329

Cost-effectiveness evaluation

Performance to price ratio. The higher, the better.

RX 6600 has 180% better value for money than RX 580 Mobile.

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	2304	1792
Core clock speed	1000 MHz	1626 MHz
Boost clock speed	1077 MHz	2491 MHz
Number of transistors	5,700 million	11,060 million
Manufacturing process technology	14 nm	7 nm
Power consumption (TDP)	100 Watt	132 Watt
Texture fill rate	155.1	279.0
Floating-point processing power	4.963 TFLOPS	8.928 TFLOPS
ROPs	32	64
TMUs	144	112
Ray Tracing Cores	no data	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	large	no data
Interface	MXM-B (3.0)	PCIe 4.0 x8
Length	no data	190 mm
Width	no data	2-slot
Supplementary power connectors	no data	1x 8-pin

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	GDDR5	GDDR6
Maximum RAM amount	8 GB	8 GB
Memory bus width	256 Bit	128 Bit
Memory clock speed	2000 MHz	1750 MHz
Memory bandwidth	256.0 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	No outputs	1x HDMI, 3x DisplayPort
HDMI	-	+

API compatibility

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

DirectX	12 (12_0)	12.0 Ultimate (12_2)
Shader Model	6.4	6.5
OpenGL	4.6	4.6
OpenCL	2.0	2.1
Vulkan	1.2.131	1.2

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 580 Mobile 19.65

RX 6600 39.27
+99.8%

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 580 Mobile 15223

RX 6600 31774
+109%

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 580 Mobile 11261

RX 6600 23366
+107%

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 580 Mobile 69325

RX 6600 145870
+110%

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 580 Mobile 290090

RX 6600 545762
+88.1%

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	77 −50.6%	116 +50.6%
1440p	30−35 −103%	61 +103%
4K	31 +0%	31 +0%

FPS performance in popular games

Full HD
Low Preset

Cyberpunk 2077

30−35

−224%

107
+224%

Full HD
Medium Preset

Assassin's Creed Odyssey	45−50 −80.4%	80−85 +80.4%
Assassin's Creed Valhalla	35−40 −223%	113 +223%
Battlefield 5	65−70 −85.3%	120−130 +85.3%
Call of Duty: Modern Warfare	40−45 −88.1%	75−80 +88.1%
Cyberpunk 2077	30−35 −176%	91 +176%
Far Cry 5	45−50 −77.1%	85−90 +77.1%
Far Cry New Dawn	55−60 −76.4%	95−100 +76.4%
Forza Horizon 4	120−130 −51.6%	190−200 +51.6%
Hitman 3	40−45 −148%	99 +148%
Horizon Zero Dawn	95−100 −64.6%	160−170 +64.6%
Metro Exodus	70−75 −77.5%	120−130 +77.5%
Red Dead Redemption 2	55−60 −67.3%	90−95 +67.3%
Shadow of the Tomb Raider	65−70 −110%	140−150 +110%
Watch Dogs: Legion	90−95 −38.7%	120−130 +38.7%

Full HD
High Preset

Assassin's Creed Odyssey	45−50 −80.4%	80−85 +80.4%
Assassin's Creed Valhalla	35−40 −163%	92 +163%
Battlefield 5	65−70 −85.3%	120−130 +85.3%
Call of Duty: Modern Warfare	40−45 −88.1%	75−80 +88.1%
Cyberpunk 2077	30−35 −121%	73 +121%
Far Cry 5	45−50 −77.1%	85−90 +77.1%
Far Cry New Dawn	55−60 −76.4%	95−100 +76.4%
Forza Horizon 4	120−130 −51.6%	190−200 +51.6%
Hitman 3	40−45 −138%	95 +138%
Horizon Zero Dawn	95−100 −64.6%	160−170 +64.6%
Metro Exodus	70−75 −77.5%	120−130 +77.5%
Red Dead Redemption 2	55−60 −67.3%	90−95 +67.3%
Shadow of the Tomb Raider	65−70 −168%	182 +168%
The Witcher 3: Wild Hunt	45−50 −76.1%	80−85 +76.1%
Watch Dogs: Legion	90−95 −38.7%	120−130 +38.7%

Full HD
Ultra Preset

Assassin's Creed Odyssey	45−50 −80.4%	80−85 +80.4%
Assassin's Creed Valhalla	35−40 −123%	78 +123%
Call of Duty: Modern Warfare	40−45 −88.1%	75−80 +88.1%
Cyberpunk 2077	30−35 −78.8%	59 +78.8%
Far Cry 5	45−50 −77.1%	85−90 +77.1%
Forza Horizon 4	120−130 −51.6%	190−200 +51.6%
Hitman 3	40−45 −115%	86 +115%
Horizon Zero Dawn	95−100 −43.4%	142 +43.4%
Shadow of the Tomb Raider	65−70 −131%	157 +131%
The Witcher 3: Wild Hunt	37 −143%	90 +143%
Watch Dogs: Legion	90−95 +60.3%	58 −60.3%

Full HD
Epic Preset

Red Dead Redemption 2

55−60

−67.3%

90−95
+67.3%

1440p
High Preset

Battlefield 5	35−40 −92.3%	75−80 +92.3%
Far Cry New Dawn	30−35 −93.5%	60−65 +93.5%

1440p
Ultra Preset

Assassin's Creed Odyssey	21−24 −100%	40−45 +100%
Assassin's Creed Valhalla	18−20 −174%	52 +174%
Call of Duty: Modern Warfare	21−24 −100%	45−50 +100%
Cyberpunk 2077	12−14 −183%	34 +183%
Far Cry 5	24−27 −87.5%	45−50 +87.5%
Forza Horizon 4	110−120 −91.3%	220−230 +91.3%
Hitman 3	24−27 −125%	54 +125%
Horizon Zero Dawn	40−45 −143%	102 +143%
Metro Exodus	35−40 −155%	97 +155%
Shadow of the Tomb Raider	40−45 −140%	101 +140%
The Witcher 3: Wild Hunt	24−27 −138%	55−60 +138%
Watch Dogs: Legion	120−130 −58.7%	190−200 +58.7%

1440p
Epic Preset

Red Dead Redemption 2

30−35

−97.1%

65−70
+97.1%

4K
High Preset

Battlefield 5	20−22 −95%	35−40 +95%
Far Cry New Dawn	16−18 −106%	30−35 +106%
Hitman 3	16−18 −125%	36 +125%
Horizon Zero Dawn	100−110 −70.1%	180−190 +70.1%
Metro Exodus	21−24 −127%	50−55 +127%
The Witcher 3: Wild Hunt	24 −83.3%	44 +83.3%

4K
Ultra Preset

Assassin's Creed Odyssey	12−14 −125%	27−30 +125%
Assassin's Creed Valhalla	10−12 −118%	24 +118%
Call of Duty: Modern Warfare	10−12 −127%	24−27 +127%
Cyberpunk 2077	4−5 −250%	14 +250%
Far Cry 5	10−12 −109%	21−24 +109%
Forza Horizon 4	27−30 −92.9%	50−55 +92.9%
Shadow of the Tomb Raider	24−27 −121%	53 +121%
Watch Dogs: Legion	9−10 −133%	21 +133%

4K
Epic Preset

Red Dead Redemption 2

18−20

−94.4%

35−40
+94.4%

This is how RX 580 Mobile and RX 6600 compete in popular games:

RX 6600 is 51% faster in 1080p
RX 6600 is 103% faster in 1440p
A tie in 4K

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

in Watch Dogs: Legion, with 1080p resolution and the Ultra Preset, the RX 580 Mobile is 60% faster.
in Cyberpunk 2077, with 4K resolution and the Ultra Preset, the RX 6600 is 250% faster.

All in all, in popular games:

RX 580 Mobile is ahead in 1 test (1%)
RX 6600 is ahead in 71 test (99%)

Pros & cons summary

Performance score	19.65	39.27
Recency	18 April 2017	13 October 2021
Chip lithography	14 nm	7 nm
Power consumption (TDP)	100 Watt	132 Watt

RX 580 Mobile has 32% lower power consumption.

RX 6600, on the other hand, has a 99.8% higher aggregate performance score, an age advantage of 4 years, and a 100% more advanced lithography process.

The Radeon RX 6600 is our recommended choice as it beats the Radeon RX 580 Mobile in performance tests.

Be aware that Radeon RX 580 Mobile is a notebook card while Radeon RX 6600 is a desktop one.

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