Radeon RX 6600 XT vs RX 580

Place in performance ranking	223	79
Place by popularity	1	51
Value for money	19.95	47.36
Architecture	Polaris (2016−2019)	Navi / RDNA2 (2020−2022)
GPU code name	Polaris 20	Navi 23
Market segment	Desktop	Desktop
Release date	18 April 2017 (7 years ago)	30 July 2021 (2 years ago)
Launch price (MSRP)	$229	$379
Current price	$138 (0.6x MSRP)	$283 (0.7x MSRP)

Value for money

Performance to price ratio. The higher, the better.

RX 6600 XT has 137% better value for money than RX 580.

Technical specs

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	2304	2048
Core clock speed	1257 MHz	1968 MHz
Boost clock speed	1340 MHz	2589 MHz
Number of transistors	5,700 million	11,060 million
Manufacturing process technology	14 nm	7 nm
Power consumption (TDP)	185 Watt	160 (TGP) Watt
Texture fill rate	193.0	331.4
Floating-point performance	6,175 gflops	no data

Size and 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 x16	PCIe 4.0 x8
Length	241 mm	190 mm
Width	2-slot	2-slot
Supplementary power connectors	1x 8-pin	1x 8-pin

Memory

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	8000 MHz	16000 MHz
Memory bandwidth	256.0 GB/s	256.0 GB/s
Shared memory	no data	-

Video outputs and ports

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	1x HDMI, 2x DisplayPort
HDMI	+	+

API support

List of supported graphics 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 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 580 22.93

RX 6600 XT 42.59
+85.7%

RX 6600 XT outperforms RX 580 by 86% 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 580 8878

RX 6600 XT 16491
+85.8%

RX 6600 XT outperforms RX 580 by 86% in Passmark.

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.

Benchmark coverage: 17%

RX 580 44344

RX 6600 XT 88163
+98.8%

RX 6600 XT outperforms RX 580 by 99% in 3DMark Vantage Performance.

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 580 19274

RX 6600 XT 39051
+103%

RX 6600 XT outperforms RX 580 by 103% 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 580 13927

RX 6600 XT 28342
+104%

RX 6600 XT outperforms RX 580 by 104% in 3DMark Fire Strike Graphics.

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.

Benchmark coverage: 14%

RX 580 82516

RX 6600 XT 156297
+89.4%

RX 6600 XT outperforms RX 580 by 89% in 3DMark Cloud Gate GPU.

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.

Benchmark coverage: 8%

RX 580 348952

RX 6600 XT 472371
+35.4%

RX 6600 XT outperforms RX 580 by 35% in 3DMark Ice Storm GPU.

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 −36.1%	132 +36.1%
1440p	43 −72.1%	74 +72.1%
4K	36 −13.9%	41 +13.9%

FPS performance in popular games

Full HD
Low Preset

Cyberpunk 2077

35−40

−114%

79
+114%

Full HD
Medium Preset

Assassin's Creed Odyssey	58 −27.6%	70−75 +27.6%
Assassin's Creed Valhalla	40−45 −223%	129 +223%
Battlefield 5	124 +3.3%	120−130 −3.3%
Call of Duty: Modern Warfare	60−65 −95%	110−120 +95%
Cyberpunk 2077	35−40 −111%	78 +111%
Far Cry 5	83 −81.9%	151 +81.9%
Far Cry New Dawn	83 −57.8%	131 +57.8%
Forza Horizon 4	108 −18.5%	120−130 +18.5%
Hitman 3	65−70 −225%	221 +225%
Horizon Zero Dawn	45−50 −180%	137 +180%
Red Dead Redemption 2	35−40 −86.5%	65−70 +86.5%
Shadow of the Tomb Raider	74 −124%	166 +124%
Watch Dogs: Legion	40−45 −173%	120 +173%

Full HD
High Preset

Assassin's Creed Odyssey	47 −57.4%	70−75 +57.4%
Assassin's Creed Valhalla	40−45 −165%	106 +165%
Battlefield 5	102 −17.6%	120−130 +17.6%
Call of Duty: Modern Warfare	60−65 −95%	110−120 +95%
Cyberpunk 2077	35−40 −105%	76 +105%
Far Cry 5	76 −85.5%	141 +85.5%
Far Cry New Dawn	78 −62.8%	127 +62.8%
Forza Horizon 4	101 −26.7%	120−130 +26.7%
Hitman 3	65−70 −169%	183 +169%
Horizon Zero Dawn	45−50 −122%	109 +122%
Metro Exodus	48 −97.9%	95 +97.9%
Red Dead Redemption 2	35−40 −86.5%	65−70 +86.5%
Shadow of the Tomb Raider	63 −125%	142 +125%
The Witcher 3: Wild Hunt	72 −144%	176 +144%
Watch Dogs: Legion	40−45 −136%	104 +136%

Full HD
Ultra Preset

Assassin's Creed Odyssey	34 −118%	70−75 +118%
Assassin's Creed Valhalla	40−45 −87.5%	75 +87.5%
Battlefield 5	93 −29%	120−130 +29%
Cyberpunk 2077	35−40 −86.5%	69 +86.5%
Far Cry 5	71 −87.3%	133 +87.3%
Far Cry New Dawn	71 −57.7%	112 +57.7%
Forza Horizon 4	82 −56.1%	120−130 +56.1%
The Witcher 3: Wild Hunt	44 −125%	99 +125%
Watch Dogs: Legion	40−45 −38.6%	61 +38.6%

1440p
High Preset

Call of Duty: Modern Warfare	35−40 −106%	70−75 +106%
Hitman 3	35−40 −195%	112 +195%
Horizon Zero Dawn	30−33 −153%	76 +153%
Metro Exodus	28 −100%	56 +100%
Red Dead Redemption 2	16−18 −106%	35−40 +106%
Shadow of the Tomb Raider	30−33 −180%	84 +180%

1440p
Ultra Preset

Assassin's Creed Odyssey	24−27 −84%	45−50 +84%
Assassin's Creed Valhalla	21−24 −155%	56 +155%
Battlefield 5	50−55 −72.5%	85−90 +72.5%
Cyberpunk 2077	14−16 −186%	40 +186%
Far Cry 5	35−40 −169%	105 +169%
Far Cry New Dawn	53 −84.9%	98 +84.9%
Forza Horizon 4	45−50 −93.6%	90−95 +93.6%
The Witcher 3: Wild Hunt	27−30 −137%	60−65 +137%
Watch Dogs: Legion	16−18 −159%	44 +159%

4K
High Preset

Call of Duty: Modern Warfare	16−18 −135%	40−45 +135%
Hitman 3	21−24 −171%	57 +171%
Horizon Zero Dawn	14−16 −33.3%	20 +33.3%
Metro Exodus	18 −88.9%	34 +88.9%
Red Dead Redemption 2	12−14 −91.7%	21−24 +91.7%
Shadow of the Tomb Raider	20 −100%	40 +100%
The Witcher 3: Wild Hunt	27 −100%	54 +100%

4K
Ultra Preset

Assassin's Creed Odyssey	18 −66.7%	30−33 +66.7%
Assassin's Creed Valhalla	12−14 −133%	28 +133%
Battlefield 5	37 −40.5%	50−55 +40.5%
Cyberpunk 2077	5−6 −180%	14 +180%
Far Cry 5	26 −96.2%	51 +96.2%
Far Cry New Dawn	29 −82.8%	53 +82.8%
Forza Horizon 4	41 −46.3%	60−65 +46.3%
Watch Dogs: Legion	10−11 −140%	24 +140%

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

RX 6600 XT is 36.1% faster than RX 580 in 1080p
RX 6600 XT is 72.1% faster than RX 580 in 1440p
RX 6600 XT is 13.9% faster than RX 580 in 4K

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

in Battlefield 5, with 1080p resolution and the Medium Preset, the RX 580 is 3.3% faster than the RX 6600 XT.
in Hitman 3, with 1080p resolution and the Medium Preset, the RX 6600 XT is 225% faster than the RX 580.

All in all, in popular games: