Radeon RX 6600 vs 620

Place in the ranking	846	116
Place by popularity	not in top-100	14
Cost-effectiveness evaluation	no data	65.97
Power efficiency	3.29	20.53
Architecture	GCN 3.0 (2014−2019)	RDNA 2.0 (2020−2024)
GPU code name	Polaris 24	Navi 23
Market segment	Laptop	Desktop
Release date	13 May 2019 (5 years ago)	13 October 2021 (3 years ago)
Launch price (MSRP)	no data	$329

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	384	1792
Core clock speed	730 MHz	1626 MHz
Boost clock speed	1024 MHz	2491 MHz
Number of transistors	1,550 million	11,060 million
Manufacturing process technology	28 nm	7 nm
Power consumption (TDP)	50 Watt	132 Watt
Texture fill rate	24.58	279.0
Floating-point processing power	0.7864 TFLOPS	8.928 TFLOPS
ROPs	8	64
TMUs	24	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).

Interface	PCIe 3.0 x8	PCIe 4.0 x8
Length	no data	190 mm
Width	no data	2-slot
Supplementary power connectors	None	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	DDR3	GDDR6
Maximum RAM amount	2 GB	8 GB
Memory bus width	64 Bit	128 Bit
Memory clock speed	900 MHz	1750 MHz
Memory bandwidth	14.4 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	6.3	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.

Radeon 620 2.39

RX 6600 39.36
+1547%

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.

Radeon 620 917

RX 6600 15130
+1550%

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.

Radeon 620 1730

RX 6600 23366
+1251%

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	6−7 −1750%	111 +1750%
1440p	3−4 −1767%	56 +1767%
4K	1−2 −3000%	31 +3000%

Cost per frame, $

1080p	no data	2.96
1440p	no data	5.88
4K	no data	10.61

FPS performance in popular games

Full HD
Low Preset

Counter-Strike 2	10−11 −1010%	111 +1010%
Cyberpunk 2077	5−6 −2040%	107 +2040%
Elden Ring	4−5 −2950%	122 +2950%

Full HD
Medium Preset

Battlefield 5	5−6 −1980%	100−110 +1980%
Counter-Strike 2	10−11 −740%	84 +740%
Cyberpunk 2077	5−6 −1520%	81 +1520%
Forza Horizon 4	12−14 −1775%	225 +1775%
Metro Exodus	3−4 −4567%	140 +4567%
Red Dead Redemption 2	9−10 −756%	75−80 +756%

Full HD
High Preset

Battlefield 5	5−6 −1980%	100−110 +1980%
Counter-Strike 2	10−11 −580%	68 +580%
Cyberpunk 2077	5−6 −1280%	69 +1280%
Dota 2	6−7 −2250%	141 +2250%
Elden Ring	4−5 −3200%	132 +3200%
Far Cry 5	14−16 −313%	62 +313%
Fortnite	12−14 −1223%	170−180 +1223%
Forza Horizon 4	12−14 −1417%	182 +1417%
Grand Theft Auto V	6−7 −2183%	137 +2183%
Metro Exodus	3−4 −3167%	98 +3167%
PLAYERUNKNOWN'S BATTLEGROUNDS	21−24 −774%	200−210 +774%
Red Dead Redemption 2	9−10 −756%	75−80 +756%
The Witcher 3: Wild Hunt	10−11 −1300%	140−150 +1300%
World of Tanks	40−45 −534%	270−280 +534%

Full HD
Ultra Preset

Battlefield 5	5−6 −1980%	100−110 +1980%
Counter-Strike 2	10−11 −490%	59 +490%
Cyberpunk 2077	5−6 −1020%	56 +1020%
Dota 2	6−7 −1683%	107 +1683%
Far Cry 5	14−16 −547%	95−100 +547%
Forza Horizon 4	12−14 −1208%	157 +1208%
PLAYERUNKNOWN'S BATTLEGROUNDS	21−24 −774%	200−210 +774%

1440p
High Preset

Elden Ring	1−2 −6900%	70 +6900%
Grand Theft Auto V	0−1	64
PLAYERUNKNOWN'S BATTLEGROUNDS	16−18 −994%	170−180 +994%
Red Dead Redemption 2	1−2 −3800%	35−40 +3800%
World of Tanks	16−18 −1456%	240−250 +1456%

1440p
Ultra Preset

Battlefield 5	1−2 −7200%	70−75 +7200%
Counter-Strike 2	9−10 −267%	33 +267%
Cyberpunk 2077	3−4 −967%	32 +967%
Far Cry 5	6−7 −2017%	120−130 +2017%
The Witcher 3: Wild Hunt	3−4 −2167%	65−70 +2167%
Valorant	8−9 −1450%	120−130 +1450%

4K
High Preset

Dota 2	16−18 −275%	60 +275%
Elden Ring	1−2 −2400%	25 +2400%
Grand Theft Auto V	14−16 −300%	60 +300%
PLAYERUNKNOWN'S BATTLEGROUNDS	7−8 −1714%	120−130 +1714%
Red Dead Redemption 2	1−2 −2500%	24−27 +2500%
The Witcher 3: Wild Hunt	14−16 −300%	60 +300%

4K
Ultra Preset

Battlefield 5	2−3 −2200%	45−50 +2200%
Cyberpunk 2077	1−2 −1100%	12 +1100%
Dota 2	16−18 −431%	85 +431%
Far Cry 5	2−3 −2800%	55−60 +2800%
Fortnite	1−2 −5500%	55−60 +5500%
Valorant	2−3 −3150%	65−70 +3150%

Full HD
Medium Preset

Valorant

150−160

+0%

150−160

+0%

Full HD
High Preset

Valorant

150−160

+0%

150−160

+0%

Full HD
Ultra Preset

Valorant

150−160

+0%

150−160

+0%

1440p
High Preset

Dota 2

+0%

1440p
Ultra Preset

Forza Horizon 4	101 +0%	101 +0%
Metro Exodus	97 +0%	97 +0%

4K
High Preset

Counter-Strike 2	20 +0%	20 +0%
Metro Exodus	29 +0%	29 +0%

4K
Ultra Preset

Counter-Strike 2	40−45 +0%	40−45 +0%
Forza Horizon 4	53 +0%	53 +0%

This is how Radeon 620 and RX 6600 compete in popular games:

RX 6600 is 1750% faster in 1080p
RX 6600 is 1767% faster in 1440p
RX 6600 is 3000% faster in 4K

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

in Battlefield 5, with 1440p resolution and the Ultra Preset, the RX 6600 is 7200% faster.

All in all, in popular games:

RX 6600 is ahead in 52 tests (84%)
there's a draw in 10 tests (16%)

Pros & cons summary

Performance score	2.39	39.36
Recency	13 May 2019	13 October 2021
Maximum RAM amount	2 GB	8 GB
Chip lithography	28 nm	7 nm
Power consumption (TDP)	50 Watt	132 Watt

Radeon 620 has 164% lower power consumption.

RX 6600, on the other hand, has a 1546.9% higher aggregate performance score, an age advantage of 2 years, a 300% higher maximum VRAM amount, and a 300% more advanced lithography process.

The Radeon RX 6600 is our recommended choice as it beats the Radeon 620 in performance tests.

Be aware that Radeon 620 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.