Radeon RX 7900 XTX vs RX 6600 XT

Place in the ranking	89	8
Place by popularity	87	61
Cost-effectiveness evaluation	63.50	34.58
Power efficiency	18.57	15.74
Architecture	RDNA 2.0 (2020−2024)	RDNA 3.0 (2022−2024)
GPU code name	Navi 23	Navi 31
Market segment	Desktop	Desktop
Release date	30 July 2021 (3 years ago)	3 November 2022 (2 years ago)
Launch price (MSRP)	$379	$999

Cost-effectiveness evaluation

Performance to price ratio. The higher, the better.

RX 6600 XT has 84% better value for money than RX 7900 XTX.

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	2048	6144
Core clock speed	1968 MHz	1929 MHz
Boost clock speed	2589 MHz	2498 MHz
Number of transistors	11,060 million	57,700 million
Manufacturing process technology	7 nm	5 nm
Power consumption (TDP)	160 Watt	355 Watt
Texture fill rate	331.4	959.2
Floating-point processing power	10.6 TFLOPS	61.39 TFLOPS
ROPs	64	192
TMUs	128	384
Ray Tracing Cores	32	96

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 4.0 x8	PCIe 4.0 x16
Length	190 mm	287 mm
Width	2-slot	2-slot
Supplementary power connectors	1x 8-pin	2x 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	GDDR6	GDDR6
Maximum RAM amount	8 GB	24 GB
Memory bus width	128 Bit	384 Bit
Memory clock speed	2000 MHz	2500 MHz
Memory bandwidth	256.0 GB/s	960.0 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, 2x DisplayPort	1x HDMI 2.1a, 2x DisplayPort 2.1, 1x USB Type-C
HDMI	+	+

API compatibility

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

DirectX	12.0 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 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 6600 XT 42.78

RX 7900 XTX 80.44
+88%

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 6600 XT 16509

RX 7900 XTX 31038
+88%

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 6600 XT 39051

RX 7900 XTX 83322
+113%

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.

RX 6600 XT 88163

RX 7900 XTX 148746
+68.7%

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 6600 XT 28342

RX 7900 XTX 64680
+128%

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 6600 XT 156297

RX 7900 XTX 211480
+35.3%

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 6600 XT 472371

RX 7900 XTX 758139
+60.5%

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	134 −90.3%	255 +90.3%
1440p	78 −128%	178 +128%
4K	42 −155%	107 +155%

Cost per frame, $

1080p	2.83	3.92
1440p	4.86	5.61
4K	9.02	9.34

FPS performance in popular games

Full HD
Low Preset

Cyberpunk 2077

−206%

242
+206%

Full HD
Medium Preset

Assassin's Creed Odyssey	90−95 −84.4%	166 +84.4%
Assassin's Creed Valhalla	129 −119%	283 +119%
Battlefield 5	130−140 −78.1%	240−250 +78.1%
Call of Duty: Modern Warfare	85−90 −39.5%	120−130 +39.5%
Cyberpunk 2077	78 −196%	231 +196%
Far Cry 5	90−95 −29.7%	110−120 +29.7%
Far Cry New Dawn	100−110 −91.4%	200−210 +91.4%
Forza Horizon 4	190−200 −26.1%	250−260 +26.1%
Hitman 3	108 −19.4%	120−130 +19.4%
Horizon Zero Dawn	170−180 −63.8%	280−290 +63.8%
Metro Exodus	130−140 −16.5%	150−160 +16.5%
Red Dead Redemption 2	95−100 −27.8%	120−130 +27.8%
Shadow of the Tomb Raider	150−160 −120%	350−400 +120%
Watch Dogs: Legion	130−140 −15.8%	150−160 +15.8%

Full HD
High Preset

Assassin's Creed Odyssey	90−95 −267%	330 +267%
Assassin's Creed Valhalla	106 −127%	241 +127%
Battlefield 5	130−140 −78.1%	240−250 +78.1%
Call of Duty: Modern Warfare	85−90 −39.5%	120−130 +39.5%
Cyberpunk 2077	76 −174%	208 +174%
Far Cry 5	90−95 −29.7%	110−120 +29.7%
Far Cry New Dawn	100−110 −91.4%	200−210 +91.4%
Forza Horizon 4	190−200 −26.1%	250−260 +26.1%
Hitman 3	108 −19.4%	120−130 +19.4%
Horizon Zero Dawn	170−180 −63.8%	280−290 +63.8%
Metro Exodus	130−140 −16.5%	150−160 +16.5%
Red Dead Redemption 2	95−100 −27.8%	120−130 +27.8%
Shadow of the Tomb Raider	209 −156%	535 +156%
The Witcher 3: Wild Hunt	85−90 −101%	170−180 +101%
Watch Dogs: Legion	130−140 −15.8%	150−160 +15.8%

Full HD
Ultra Preset

Assassin's Creed Odyssey	90−95 −48.9%	134 +48.9%
Assassin's Creed Valhalla	75 −180%	210 +180%
Call of Duty: Modern Warfare	85−90 −39.5%	120−130 +39.5%
Cyberpunk 2077	69 −188%	199 +188%
Far Cry 5	90−95 −29.7%	110−120 +29.7%
Forza Horizon 4	190−200 −48.2%	295 +48.2%
Hitman 3	100 −29%	120−130 +29%
Horizon Zero Dawn	157 −159%	406 +159%
Shadow of the Tomb Raider	183 −157%	471 +157%
The Witcher 3: Wild Hunt	99 −201%	298 +201%
Watch Dogs: Legion	61 −159%	158 +159%

Full HD
Epic Preset

Red Dead Redemption 2

95−100

−27.8%

120−130
+27.8%

1440p
High Preset

Battlefield 5	80−85 −100%	160−170 +100%
Far Cry New Dawn	65−70 −72.3%	110−120 +72.3%

1440p
Ultra Preset

Assassin's Creed Odyssey	45−50 −181%	132 +181%
Assassin's Creed Valhalla	56 −205%	171 +205%
Call of Duty: Modern Warfare	50−55 −64%	80−85 +64%
Cyberpunk 2077	40 −253%	141 +253%
Far Cry 5	45−50 −71.4%	80−85 +71.4%
Forza Horizon 4	230−240 −15.3%	270−280 +15.3%
Hitman 3	67 −76.1%	110−120 +76.1%
Horizon Zero Dawn	116 −183%	328 +183%
Metro Exodus	98 −49%	146 +49%
Shadow of the Tomb Raider	118 −205%	360 +205%
The Witcher 3: Wild Hunt	60−65 −272%	238 +272%
Watch Dogs: Legion	200−210 −18.8%	240−250 +18.8%

1440p
Epic Preset

Red Dead Redemption 2

70−75

−67.6%

120−130
+67.6%

4K
High Preset

Battlefield 5	40−45 −105%	85−90 +105%
Far Cry New Dawn	35−40 −86.5%	65−70 +86.5%
Hitman 3	33 −121%	70−75 +121%
Horizon Zero Dawn	190−200 −18.3%	220−230 +18.3%
Metro Exodus	55−60 −143%	130−140 +143%
The Witcher 3: Wild Hunt	54 −237%	182 +237%

4K
Ultra Preset

Assassin's Creed Odyssey	30−33 −267%	110 +267%
Assassin's Creed Valhalla	28 −282%	107 +282%
Call of Duty: Modern Warfare	27−30 −85.7%	50−55 +85.7%
Cyberpunk 2077	14 −407%	71 +407%
Far Cry 5	24−27 −100%	50−55 +100%
Forza Horizon 4	60−65 −278%	227 +278%
Shadow of the Tomb Raider	61 −223%	197 +223%
Watch Dogs: Legion	24 −329%	103 +329%

4K
Epic Preset

Red Dead Redemption 2

35−40

−144%

95−100
+144%

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

RX 7900 XTX is 90% faster in 1080p
RX 7900 XTX is 128% faster in 1440p
RX 7900 XTX is 155% faster in 4K

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

in Cyberpunk 2077, with 4K resolution and the Ultra Preset, the RX 7900 XTX is 407% faster.

All in all, in popular games:

Without exception, RX 7900 XTX surpassed RX 6600 XT in all 72 of our tests.

Pros & cons summary

Performance score	42.78	80.44
Recency	30 July 2021	3 November 2022
Maximum RAM amount	8 GB	24 GB
Chip lithography	7 nm	5 nm
Power consumption (TDP)	160 Watt	355 Watt

RX 6600 XT has 121.9% lower power consumption.

RX 7900 XTX, on the other hand, has a 88% higher aggregate performance score, an age advantage of 1 year, a 200% higher maximum VRAM amount, and a 40% more advanced lithography process.

The Radeon RX 7900 XTX is our recommended choice as it beats the Radeon RX 6600 XT in performance tests.

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