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ASRock Radeon RX 7900 XTX Phantom Gaming 24GB OC Graphics Card Review

Today, we will be taking a look at the ASRock Phantom Gaming Radeon RX 7900 XTX graphics card.

When AMD announced the the launch of their Radeon RX 7000 series of graphics card late last year 2022, many AMD fans and gamers were excited, including myself.

It was a graphics cards that offered increased performance and better improvements over AMD’s previous generation, the Radeon RX 6000 series. What’s more the highest-end RX 7900 XTX, needed no changes or upgrades to your existing PC … just replace your old graphics card, plug in the standard PCIE power cable in to the new card and away you go! … and get all this for under a thousand dollars at only $999. Now that’s pretty impressive.

However, the Radeon RX 7900 XT/XTX isn’t without its problems. Soon after launch around December 2022, customers started receiving their graphics cards from AMD (based on their reference design). But reports started to flood in, with regards to over-heating and performance throttling. They later found the cause of the issue to be an unusual hotspot on the GPU die with temperatures reaching 110 degrees Celsius! Most of these cards based on the reference board designs had to be returned back to AMD for further diagnostics and testing.

Now, with that said … I’m not too worried about this, as I know many manufacturers such as ASRock, Asus, MSI, Gigabyte, Sapphire, Powercolor etc., produce their own custom Radeon RX 7900 XT/XTX using their own cooling solutions. This should hopefully help reduce the temperatures of the GPU hotspots.

Ok, now let’s back on track with this review and take a look at the ASRock Phantom Gaming Radeon RX 7900 XTX graphics card. This is the first high-end custom Radeon graphics card we’ve tested from ASRock. It features their Phantom Gaming 3X cooling solution which includes 3 fans and a mssive heatsink with 7 heatpipes. Hotspots? What hotspots!? LOL! …  It will be fun to see how well this card will perform in our test rig.


I would like to thank ASRock for providing the review sample. This is a snippet from what ASRock has to say about themselves on their website:

ASRock Inc. is established in 2002, specialized in the field of motherboards. ASRock strives to build up its own brand. With the 3C design concept, “Creativity, Consideration, Cost-effectiveness”, the company explores the limit of motherboards manufacturing while paying attention on the eco issue at the same time, developing products with the consideration of eco-friendly concept.



ASRock has been growing fast and become world third largest motherboard brand with headquarter in Taipei, Taiwan and branches in Europe and the USA. The young and vibrant company targets from mainstream to enthusiast MB segments for different kinds of users, owning reputation around the world market with its reliability and proficiency.

Here’s a quick comparison between AMD’s Radeon RX 6750 XT, RX 6900 XT, RX 7900 XT and ASRock’s lastest Radeon RX 7900 XTX (in red).

Radeon RX 6750 XT Radeon RX 6900 XT Radeon RX 7900 XT Radeon RX 7900 XTX
Compute Units 40 80 84 96
FinFET process
7nm 7nm 5nm 5nm
Base/Game Frequency (MHz) 2495/2495 1825/2015 1500/2000 1855/2300
Boost Frequency (MHz)  2600 2250 2400 2500
Stream Processors 2560 5120 5376 6144
Ray Accelerators 40 80 84 96
Memory Type 12 GB GDDR6 16 GB GDDR6 20GB GDDR6 24GB GDDR6
Memory Bus 192-bit 256-bit 320-bit 384-bit
Memory Speed 18 Gbps 16 Gbps 20 Gbps 20 Gbps
TBP 250W 300W 315W 355W

The Radeon RX 7900 XTX graphics card uses AMD’s Navi 31 XTX GPU which features 96 compute units, 96 Ray accelerators and 6,144 stream processors. The Typical Board Power is rated at 355 W, so we recommemd a power supply of 800W or higher.

Now the ASRock Radeon RX 7900 XTX graphics card is factory-overclocked and operates on a Boost Clock speed of up to 2,615 MHz (the default is 2500 Mhz), while the Game Clock speed is now at 2,455 MHz (default is 2300 Mhz).

It comes with 24GB of GDDR6 ram on a 384-bit memory bus with a memory speed of 20 Gbps, giving you a total effective bandwidth of up to 3500 Gigabits/second. WoW!

Being a custom Radeon card from ASRock, it now comes with some unique features including ASRock’s Phantom Gaming 3X Cooling System, Reinforced Metal Frame, Striped Ring Fan and of course Polychrome SYNC.

I’m super excited to see what the card can do for us in terms of performance. I’m particularly interested to see how it will compare against the RTX 3090.

We’ll be testing this card using an Intel Core i9-13900K along with a Z790 motherboard, to see how it performs against the Radeon RX 6750 XT and our GeForce RTX 3090.

Let’s dive straight in and start by taking a look at the specifications of the graphics card on our next page. You can buy the ASRock Radeon RX 7900 XTX Phantom Gaming graphics card for around USD $1,499 from Amazon –


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tstec 9 March 2023 at 17:23

106º is pretty bad, my MBA model stays at 80º on the hotspot

Winston 9 March 2023 at 17:45

We tested the card at 100% load … no throttling and no issues, plus it uses an overclocked GPU. It peaked at 106 but averages around 100, which i think is acceptable.

Roo 14 March 2023 at 13:53

Winston i heard that several users I dont own this have tighten screw on backplate and got better hot spot temps cause the backplate werent properly seated i dont know if its true . I test a XT tuf hotspot is 79c . Thanks for a good reveiw buddy though.

Winston 16 March 2023 at 06:23

Ok let me check… maybe I should tighten the backplate a little more 😆

Sisyfos 24 March 2023 at 10:40

How was it, did you manage to get any better temps with tightening the screws/other stuff. That 106 seems high, especially with the difference between GPU edge and junction temps being 46 Celsius. The reference models are considered faulty if the temp difference is over 40C (and junction reaches 110C). As I already had one such card, I am hesitant to be burned twice (pun intended) by a 7900 XTX 😀

Nelio Ornelas 26 April 2023 at 01:35

Hi there, Winston you wrote that : ” the ASRock Phantom Gaming 3X cooling solution is doing a great job of cooling the graphics card. This is all thanks to the large heatsink with 6 heatpipes and triple ring fans.” And I had the impression that the ASRock Radeon RX 7900 XTX Phantom Gaming 24GB OC Graphics Card comes with 8 Ultra-fit heatpipes, according to the photos displayed on the ASRock website… At least I count 8 pipes on their photo. Can you tell me if I am wrong here…??

Winston 26 April 2023 at 02:38

Actually I recounted … total is 7 heatpipes. I have amended the review accordingly. Thanks 🙏

SimeonGG 13 September 2023 at 13:54

Heya, for people with bad temps. It seems boost clock is a bit much for the card. I found this thread on reddit: people suggest to UC (2300-2400 frequency, 1120mv, 2714 ram and +15 pwr), and then FAN speed drop by 500rpm, also power consumption from around 400W to 300W and loose FPS is like 1-3FPS. Can try this settings for you.


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