Radeon RX 6600M vs ATI HD 2600 XT

Place in performance ranking	1167	138
Place by popularity	not in top-100	not in top-100
Cost-effectiveness evaluation	0.01	no data
Architecture	TeraScale (2005−2013)	RDNA 2 (2020−2023)
GPU code name	RV630	R21M-E65-70
Market segment	Desktop	Laptop
Release date	28 June 2007 (17 years ago)	1 September 2020 (4 years ago)
Launch price (MSRP)	$199	no data

Cost-effectiveness evaluation

Performance to price ratio. The higher, the better.

no data

Detailed specifications

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	120	1792
Core clock speed	800 MHz	2068 MHz
Boost clock speed	no data	2177 MHz
Number of transistors	390 million	11,060 million
Manufacturing process technology	65 nm	7 nm
Power consumption (TDP)	45 Watt	100 Watt (50 - 100 Watt TGP)
Texture fill rate	6.400	235.8
Floating-point performance	0.192 gflops	7.544 gflops

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 1.0 x16	PCIe 4.0 x8
Width	1-slot	no data
Supplementary power connectors	None	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	GDDR3	GDDR6
Maximum RAM amount	256 MB	8 GB
Memory bus width	128 Bit	128 Bit
Memory clock speed	1400 MHz	14000 MHz
Memory bandwidth	22.4 GB/s	256.0 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

2x DVI, 1x S-Video

No outputs

API compatibility

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

DirectX	10.0 (10_0)	12 Ultimate (12_2)
Shader Model	4.0	6.5
OpenGL	3.3	4.6
OpenCL	N/A	2.1
Vulkan	N/A	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.

ATI HD 2600 XT 0.73

RX 6600M 35.63
+4781%

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.

ATI HD 2600 XT 282

RX 6600M 13749
+4776%

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	1−2 −9600%	97 +9600%
1440p	1−2 −5400%	55 +5400%
4K	0−1	32

FPS performance in popular games

Full HD
Low Preset

Cyberpunk 2077

110

+0%

110

+0%

Full HD
Medium Preset

Assassin's Creed Odyssey	108 +0%	108 +0%
Assassin's Creed Valhalla	95 +0%	95 +0%
Battlefield 5	110−120 +0%	110−120 +0%
Call of Duty: Modern Warfare	70−75 +0%	70−75 +0%
Cyberpunk 2077	90 +0%	90 +0%
Far Cry 5	75−80 +0%	75−80 +0%
Far Cry New Dawn	85−90 +0%	85−90 +0%
Forza Horizon 4	180−190 +0%	180−190 +0%
Hitman 3	75−80 +0%	75−80 +0%
Horizon Zero Dawn	150−160 +0%	150−160 +0%
Metro Exodus	110−120 +0%	110−120 +0%
Red Dead Redemption 2	85−90 +0%	85−90 +0%
Shadow of the Tomb Raider	120−130 +0%	120−130 +0%
Watch Dogs: Legion	120−130 +0%	120−130 +0%

Full HD
High Preset

Assassin's Creed Odyssey	199 +0%	199 +0%
Assassin's Creed Valhalla	79 +0%	79 +0%
Battlefield 5	110−120 +0%	110−120 +0%
Call of Duty: Modern Warfare	70−75 +0%	70−75 +0%
Cyberpunk 2077	72 +0%	72 +0%
Far Cry 5	75−80 +0%	75−80 +0%
Far Cry New Dawn	85−90 +0%	85−90 +0%
Forza Horizon 4	180−190 +0%	180−190 +0%
Hitman 3	75−80 +0%	75−80 +0%
Horizon Zero Dawn	150−160 +0%	150−160 +0%
Metro Exodus	110−120 +0%	110−120 +0%
Red Dead Redemption 2	85−90 +0%	85−90 +0%
Shadow of the Tomb Raider	173 +0%	173 +0%
The Witcher 3: Wild Hunt	70−75 +0%	70−75 +0%
Watch Dogs: Legion	120−130 +0%	120−130 +0%

Full HD
Ultra Preset

Assassin's Creed Odyssey	79 +0%	79 +0%
Assassin's Creed Valhalla	69 +0%	69 +0%
Call of Duty: Modern Warfare	70−75 +0%	70−75 +0%
Cyberpunk 2077	61 +0%	61 +0%
Far Cry 5	75−80 +0%	75−80 +0%
Forza Horizon 4	168 +0%	168 +0%
Hitman 3	75−80 +0%	75−80 +0%
Horizon Zero Dawn	134 +0%	134 +0%
Shadow of the Tomb Raider	153 +0%	153 +0%
The Witcher 3: Wild Hunt	85 +0%	85 +0%
Watch Dogs: Legion	59 +0%	59 +0%

Full HD
Epic Preset

Red Dead Redemption 2

85−90

+0%

85−90

+0%

1440p
High Preset

Battlefield 5	65−70 +0%	65−70 +0%
Far Cry New Dawn	50−55 +0%	50−55 +0%

1440p
Ultra Preset

Assassin's Creed Odyssey	51 +0%	51 +0%
Assassin's Creed Valhalla	52 +0%	52 +0%
Call of Duty: Modern Warfare	40−45 +0%	40−45 +0%
Cyberpunk 2077	36 +0%	36 +0%
Far Cry 5	40−45 +0%	40−45 +0%
Forza Horizon 4	200−210 +0%	200−210 +0%
Hitman 3	45−50 +0%	45−50 +0%
Horizon Zero Dawn	98 +0%	98 +0%
Metro Exodus	85 +0%	85 +0%
Shadow of the Tomb Raider	100 +0%	100 +0%
The Witcher 3: Wild Hunt	62 +0%	62 +0%
Watch Dogs: Legion	180−190 +0%	180−190 +0%

1440p
Epic Preset

Red Dead Redemption 2

60−65

+0%

60−65

+0%

4K
High Preset

Battlefield 5	35−40 +0%	35−40 +0%
Far Cry New Dawn	27−30 +0%	27−30 +0%
Hitman 3	27−30 +0%	27−30 +0%
Horizon Zero Dawn	170−180 +0%	170−180 +0%
Metro Exodus	40−45 +0%	40−45 +0%
The Witcher 3: Wild Hunt	44 +0%	44 +0%

4K
Ultra Preset

Assassin's Creed Odyssey	29 +0%	29 +0%
Assassin's Creed Valhalla	27 +0%	27 +0%
Call of Duty: Modern Warfare	21−24 +0%	21−24 +0%
Cyberpunk 2077	14 +0%	14 +0%
Far Cry 5	20−22 +0%	20−22 +0%
Forza Horizon 4	74 +0%	74 +0%
Shadow of the Tomb Raider	52 +0%	52 +0%
Watch Dogs: Legion	21 +0%	21 +0%

4K
Epic Preset

Red Dead Redemption 2

30−35

+0%

30−35

+0%

This is how ATI HD 2600 XT and RX 6600M compete in popular games:

RX 6600M is 9600% faster in 1080p
RX 6600M is 5400% faster in 1440p

All in all, in popular games:

there's a draw in 72 tests (100%)

Pros & cons summary

Performance score	0.73	35.63
Recency	28 June 2007	1 September 2020
Maximum RAM amount	256 MB	8 GB
Chip lithography	65 nm	7 nm
Power consumption (TDP)	45 Watt	100 Watt

ATI HD 2600 XT has 122.2% lower power consumption.

RX 6600M, on the other hand, has a 4780.8% higher aggregate performance score, an age advantage of 13 years, a 3100% higher maximum VRAM amount, and a 828.6% more advanced lithography process.

The Radeon RX 6600M is our recommended choice as it beats the Radeon HD 2600 XT in performance tests.

Be aware that Radeon HD 2600 XT is a desktop card while Radeon RX 6600M is a notebook one.

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