Radeon RX 6600S vs RX 580

Place in the ranking	244	171
Place by popularity	1	not in top-100
Cost-effectiveness evaluation	18.55	no data
Power efficiency	8.51	27.67
Architecture	GCN 4.0 (2016−2020)	RDNA 2.0 (2020−2024)
GPU code name	Polaris 20	Navi 23
Market segment	Desktop	Laptop
Release date	18 April 2017 (7 years ago)	4 January 2022 (2 years ago)
Launch price (MSRP)	$229	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	2304	1792
Core clock speed	1257 MHz	1700 MHz
Boost clock speed	1340 MHz	2000 MHz
Number of transistors	5,700 million	11,060 million
Manufacturing process technology	14 nm	7 nm
Power consumption (TDP)	185 Watt	80 Watt
Texture fill rate	193.0	224.0
Floating-point processing power	6.175 TFLOPS	7.168 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	no data	medium sized
Interface	PCIe 3.0 x16	PCIe 4.0 x8
Length	241 mm	no data
Width	2-slot	no data
Supplementary power connectors	1x 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	GDDR5	GDDR6
Maximum RAM amount	8 GB	4 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	1x HDMI, 3x DisplayPort	No outputs
HDMI	+	-

API compatibility

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

DirectX	12 (12_0)	12 Ultimate (12_2)
Shader Model	6.4	6.5
OpenGL	4.6	4.6
OpenCL	2.0	2.1
Vulkan	1.2.131	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 580 22.97

RX 6600S 32.29
+40.6%

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 580 8852

RX 6600S 12444
+40.6%

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	97 −34%	130−140 +34%
1440p	40 −37.5%	55−60 +37.5%
4K	35 −28.6%	45−50 +28.6%

Cost per frame, $

1080p	2.36	no data
1440p	5.73	no data
4K	6.54	no data

FPS performance in popular games

Full HD
Low Preset

Cyberpunk 2077

35−40

−64.9%

60−65
+64.9%

Full HD
Medium Preset

Assassin's Creed Odyssey	58 −31%	75−80 +31%
Assassin's Creed Valhalla	35−40 −56.4%	60−65 +56.4%
Battlefield 5	138 +20%	110−120 −20%
Call of Duty: Modern Warfare	45−50 −53.2%	70−75 +53.2%
Cyberpunk 2077	35−40 −64.9%	60−65 +64.9%
Far Cry 5	83 +6.4%	75−80 −6.4%
Far Cry New Dawn	83 −7.2%	85−90 +7.2%
Forza Horizon 4	294 +62.4%	180−190 −62.4%
Hitman 3	45−50 −63%	75−80 +63%
Horizon Zero Dawn	100−110 −39.8%	150−160 +39.8%
Metro Exodus	111 −4.5%	110−120 +4.5%
Red Dead Redemption 2	60−65 −41.7%	85−90 +41.7%
Shadow of the Tomb Raider	122 −4.1%	120−130 +4.1%
Watch Dogs: Legion	95−100 −24.2%	120−130 +24.2%

Full HD
High Preset

Assassin's Creed Odyssey	101 +32.9%	75−80 −32.9%
Assassin's Creed Valhalla	35−40 −56.4%	60−65 +56.4%
Battlefield 5	113 −1.8%	110−120 +1.8%
Call of Duty: Modern Warfare	45−50 −53.2%	70−75 +53.2%
Cyberpunk 2077	35−40 −64.9%	60−65 +64.9%
Far Cry 5	69 −13%	75−80 +13%
Far Cry New Dawn	64 −39.1%	85−90 +39.1%
Forza Horizon 4	270 +49.2%	180−190 −49.2%
Hitman 3	45−50 −63%	75−80 +63%
Horizon Zero Dawn	100−110 −39.8%	150−160 +39.8%
Metro Exodus	87 −33.3%	110−120 +33.3%
Red Dead Redemption 2	60−65 −41.7%	85−90 +41.7%
Shadow of the Tomb Raider	75−80 −64.9%	120−130 +64.9%
The Witcher 3: Wild Hunt	50−55 −48%	70−75 +48%
Watch Dogs: Legion	95−100 −24.2%	120−130 +24.2%

Full HD
Ultra Preset

Assassin's Creed Odyssey	34 −124%	75−80 +124%
Assassin's Creed Valhalla	35−40 −56.4%	60−65 +56.4%
Call of Duty: Modern Warfare	45−50 −53.2%	70−75 +53.2%
Cyberpunk 2077	35−40 −64.9%	60−65 +64.9%
Far Cry 5	49 −59.2%	75−80 +59.2%
Forza Horizon 4	82 −121%	180−190 +121%
Hitman 3	45−50 −63%	75−80 +63%
Horizon Zero Dawn	100−110 −39.8%	150−160 +39.8%
Shadow of the Tomb Raider	75−80 −64.9%	120−130 +64.9%
The Witcher 3: Wild Hunt	44 −68.2%	70−75 +68.2%
Watch Dogs: Legion	95−100 −24.2%	120−130 +24.2%

Full HD
Epic Preset

Red Dead Redemption 2

60−65

−41.7%

85−90
+41.7%

1440p
High Preset

Battlefield 5	40−45 −54.5%	65−70 +54.5%
Far Cry New Dawn	35−40 −54.3%	50−55 +54.3%

1440p
Ultra Preset

Assassin's Creed Odyssey	24−27 −58.3%	35−40 +58.3%
Assassin's Creed Valhalla	21−24 −72.7%	35−40 +72.7%
Call of Duty: Modern Warfare	24−27 −57.7%	40−45 +57.7%
Cyberpunk 2077	14−16 −92.9%	27−30 +92.9%
Far Cry 5	24−27 −57.7%	40−45 +57.7%
Forza Horizon 4	130−140 −55.4%	200−210 +55.4%
Hitman 3	27−30 −66.7%	45−50 +66.7%
Horizon Zero Dawn	45−50 −61.7%	75−80 +61.7%
Metro Exodus	53 −26.4%	65−70 +26.4%
Shadow of the Tomb Raider	45−50 −71.4%	80−85 +71.4%
The Witcher 3: Wild Hunt	27−30 −75%	45−50 +75%
Watch Dogs: Legion	130−140 −36.4%	180−190 +36.4%

1440p
Epic Preset

Red Dead Redemption 2

35−40

−60.5%

60−65
+60.5%

4K
High Preset

Battlefield 5	37 +5.7%	35−40 −5.7%
Far Cry New Dawn	22 −31.8%	27−30 +31.8%
Hitman 3	18−20 −61.1%	27−30 +61.1%
Horizon Zero Dawn	110−120 −42.9%	170−180 +42.9%
Metro Exodus	33 −33.3%	40−45 +33.3%
The Witcher 3: Wild Hunt	27 −51.9%	40−45 +51.9%

4K
Ultra Preset

Assassin's Creed Odyssey	18 −27.8%	21−24 +27.8%
Assassin's Creed Valhalla	12−14 −75%	21−24 +75%
Call of Duty: Modern Warfare	12−14 −69.2%	21−24 +69.2%
Cyberpunk 2077	5−6 −120%	10−12 +120%
Far Cry 5	16 −25%	20−22 +25%
Forza Horizon 4	41 −19.5%	45−50 +19.5%
Shadow of the Tomb Raider	27−30 −74.1%	45−50 +74.1%
Watch Dogs: Legion	10−11 −70%	16−18 +70%

4K
Epic Preset

Red Dead Redemption 2

20−22

−55%

30−35
+55%

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

RX 6600S is 34% faster in 1080p
RX 6600S is 38% faster in 1440p
RX 6600S is 29% 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 580 is 62% faster.
in Assassin's Creed Odyssey, with 1080p resolution and the Ultra Preset, the RX 6600S is 124% faster.

All in all, in popular games:

RX 580 is ahead in 6 tests (8%)
RX 6600S is ahead in 66 tests (92%)

Pros & cons summary

Performance score	22.97	32.29
Recency	18 April 2017	4 January 2022
Maximum RAM amount	8 GB	4 GB
Chip lithography	14 nm	7 nm
Power consumption (TDP)	185 Watt	80 Watt

RX 580 has a 100% higher maximum VRAM amount.

RX 6600S, on the other hand, has a 40.6% higher aggregate performance score, an age advantage of 4 years, a 100% more advanced lithography process, and 131.3% lower power consumption.

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

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

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