GeForce RTX 4090 D vs Radeon RX 6600 XT

Place in the ranking	90	2
Place by popularity	87	not in top-100
Cost-effectiveness evaluation	63.42	17.65
Power efficiency	18.59	15.34
Architecture	RDNA 2.0 (2020−2024)	Ada Lovelace (2022−2024)
GPU code name	Navi 23	AD102
Market segment	Desktop	Desktop
Release date	30 July 2021 (3 years ago)	28 December 2023 (less than a year ago)
Launch price (MSRP)	$379	$1,599

Cost-effectiveness evaluation

Performance to price ratio. The higher, the better.

RX 6600 XT has 259% better value for money than RTX 4090 D.

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	14592
Core clock speed	1968 MHz	2280 MHz
Boost clock speed	2589 MHz	2520 MHz
Number of transistors	11,060 million	76,300 million
Manufacturing process technology	7 nm	5 nm
Power consumption (TDP)	160 Watt	425 Watt
Texture fill rate	331.4	1,149
Floating-point processing power	10.6 TFLOPS	73.54 TFLOPS
ROPs	64	176
TMUs	128	456
Tensor Cores	no data	456
Ray Tracing Cores	32	114

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	304 mm
Width	2-slot	3-slot
Supplementary power connectors	1x 8-pin	1x 16-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	GDDR6X
Maximum RAM amount	8 GB	24 GB
Memory bus width	128 Bit	384 Bit
Memory clock speed	2000 MHz	1313 MHz
Memory bandwidth	256.0 GB/s	1,008 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 2.1, 3x DisplayPort 1.4a
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	3.0
Vulkan	1.2	1.3
CUDA	-	8.9

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 42.79

RTX 4090 D 93.82
+119%

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 16510

RTX 4090 D 36196
+119%

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	135 −115%	290−300 +115%
1440p	77 −108%	160−170 +108%
4K	43 −109%	90−95 +109%

Cost per frame, $

1080p	2.81	5.51
1440p	4.92	9.99
4K	8.81	17.77

FPS performance in popular games

Full HD
Low Preset

Cyberpunk 2077

79
−115%

170−180

+115%

Full HD
Medium Preset

Assassin's Creed Odyssey	90−95 −111%	190−200 +111%
Assassin's Creed Valhalla	129 −117%	280−290 +117%
Battlefield 5	130−140 −119%	300−310 +119%
Call of Duty: Modern Warfare	85−90 −109%	180−190 +109%
Cyberpunk 2077	78 −118%	170−180 +118%
Far Cry 5	90−95 −109%	190−200 +109%
Far Cry New Dawn	100−110 −119%	230−240 +119%
Forza Horizon 4	190−200 −101%	400−450 +101%
Hitman 3	108 −113%	230−240 +113%
Horizon Zero Dawn	170−180 −101%	350−400 +101%
Metro Exodus	130−140 −118%	290−300 +118%
Red Dead Redemption 2	95−100 −116%	210−220 +116%
Shadow of the Tomb Raider	150−160 −88.7%	300−310 +88.7%
Watch Dogs: Legion	130−140 −118%	290−300 +118%

Full HD
High Preset

Assassin's Creed Odyssey	90−95 −111%	190−200 +111%
Assassin's Creed Valhalla	106 −117%	230−240 +117%
Battlefield 5	130−140 −119%	300−310 +119%
Call of Duty: Modern Warfare	85−90 −109%	180−190 +109%
Cyberpunk 2077	76 −111%	160−170 +111%
Far Cry 5	90−95 −109%	190−200 +109%
Far Cry New Dawn	100−110 −119%	230−240 +119%
Forza Horizon 4	190−200 −101%	400−450 +101%
Hitman 3	108 −113%	230−240 +113%
Horizon Zero Dawn	170−180 −101%	350−400 +101%
Metro Exodus	130−140 −118%	290−300 +118%
Red Dead Redemption 2	95−100 −116%	210−220 +116%
Shadow of the Tomb Raider	209 −115%	450−500 +115%
The Witcher 3: Wild Hunt	85−90 −116%	190−200 +116%
Watch Dogs: Legion	130−140 −118%	290−300 +118%

Full HD
Ultra Preset

Assassin's Creed Odyssey	90−95 −111%	190−200 +111%
Assassin's Creed Valhalla	75 −113%	160−170 +113%
Call of Duty: Modern Warfare	85−90 −109%	180−190 +109%
Cyberpunk 2077	69 −117%	150−160 +117%
Far Cry 5	90−95 −109%	190−200 +109%
Forza Horizon 4	190−200 −101%	400−450 +101%
Hitman 3	100 −110%	210−220 +110%
Horizon Zero Dawn	157 −91.1%	300−310 +91.1%
Shadow of the Tomb Raider	183 −119%	400−450 +119%
The Witcher 3: Wild Hunt	99 −112%	210−220 +112%
Watch Dogs: Legion	61 −113%	130−140 +113%

Full HD
Epic Preset

Red Dead Redemption 2

95−100
−116%

210−220

+116%

1440p
High Preset

Battlefield 5	80−85 −117%	180−190 +117%
Far Cry New Dawn	65−70 −115%	140−150 +115%

1440p
Ultra Preset

Assassin's Creed Odyssey	45−50 −113%	100−105 +113%
Assassin's Creed Valhalla	56 −114%	120−130 +114%
Call of Duty: Modern Warfare	50−55 −100%	100−105 +100%
Cyberpunk 2077	40 −113%	85−90 +113%
Far Cry 5	45−50 −104%	100−105 +104%
Forza Horizon 4	230−240 −113%	500−550 +113%
Hitman 3	67 −109%	140−150 +109%
Horizon Zero Dawn	116 −116%	250−260 +116%
Metro Exodus	98 −114%	210−220 +114%
Shadow of the Tomb Raider	118 −112%	250−260 +112%
The Witcher 3: Wild Hunt	60−65 −119%	140−150 +119%
Watch Dogs: Legion	200−210 −98%	400−450 +98%

1440p
Epic Preset

Red Dead Redemption 2

70−75
−116%

160−170

+116%

4K
High Preset

Battlefield 5	40−45 −109%	90−95 +109%
Far Cry New Dawn	35−40 −116%	80−85 +116%
Hitman 3	33 −112%	70−75 +112%
Horizon Zero Dawn	190−200 −109%	400−450 +109%
Metro Exodus	55−60 −114%	120−130 +114%
The Witcher 3: Wild Hunt	54 −104%	110−120 +104%

4K
Ultra Preset

Assassin's Creed Odyssey	30−33 −117%	65−70 +117%
Assassin's Creed Valhalla	28 −114%	60−65 +114%
Call of Duty: Modern Warfare	27−30 −114%	60−65 +114%
Cyberpunk 2077	14 −114%	30−33 +114%
Far Cry 5	24−27 −100%	50−55 +100%
Forza Horizon 4	60−65 −117%	130−140 +117%
Shadow of the Tomb Raider	61 −113%	130−140 +113%
Watch Dogs: Legion	24 −108%	50−55 +108%

4K
Epic Preset

Red Dead Redemption 2

35−40

−118%

85−90
+118%

This is how RX 6600 XT and RTX 4090 D compete in popular games:

RTX 4090 D is 115% faster in 1080p
RTX 4090 D is 108% faster in 1440p
RTX 4090 D is 109% faster in 4K

Pros & cons summary

Performance score	42.79	93.82
Recency	30 July 2021	28 December 2023
Maximum RAM amount	8 GB	24 GB
Chip lithography	7 nm	5 nm
Power consumption (TDP)	160 Watt	425 Watt

RX 6600 XT has 165.6% lower power consumption.

RTX 4090 D, on the other hand, has a 119.3% higher aggregate performance score, an age advantage of 2 years, a 200% higher maximum VRAM amount, and a 40% more advanced lithography process.

The GeForce RTX 4090 D 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.