a bilibili user called yixin3 reportedly a gpu engineer shared some news and thoughts under a recent video on bilibili.
some q&a (translated by grok):
Q1
What are the next-gen AMD UDNA architecture GPUs actually like? How do they compare to RDNA4 cards at the same specs?
A1
I’ve received the spec sheet but don’t have samples yet. They’re expected to arrive in the second half of this year. I’m under NDA so I can’t disclose the details.
Q2
Why didn’t AMD release any graphics driver updates throughout the entire month of April, and kept delaying until mid-May? What’s going on? Can you explain in detail?
A2
In detail — it’s simply because they don’t have enough resources.
Q3
I'm trying to decide between the 9070 XT or a higher-end 9070. Bro, can you give me some advice?
A3
Go with the XT. Different SKUs already have different PPT tables written in them. Manual overclocking is unstable. Once you pair it with a power supply that has enough wattage, just run everything on default settings.
Q4
Will the year-end bonus come with a graphics card?
A4
Nope, it's all real cash salary stocks. At the annual party I only drew
JD.com vouchers three times. Laptops and travel funds aren't meant for me.
Q5
Hello, I just received my 9070 XT Phoenix Nirvana and haven't installed it yet. My PSU is a Jinhu Tian Platinum A 850W. The motherboard already uses two 8-pin EPS connectors, so my PSU only has two PCIe power cables left. I was thinking of plugging one single 8-pin into the leftmost port on the GPU (closest to the core), then using a 1-to-2 cable on the middle port (main line), and the branch line on the rightmost port. Is this setup okay? Will it cause driver crashes or instability?
A5
Not recommended. I’ve been using a Seasonic 850W for a long time and have never had driver drop issues. If you can, it’s better to swap to a proper, non-nerfed power supply.
Q6
Thanks for the attention from the official team. I genuinely feel that the 9070 XT’s performance per watt is indeed worse than the 9070 — it consumes 38% more power for only 10% more performance. If there’s a more detailed official architecture whitepaper that can show the real user value of this higher power draw, I’d be willing to recommend it to my friends. After all, I’m a real AMD user. The video was recorded on a 9600X, and I’m replying on a 5700X.
A6
I’m not official staff, just an engineer.There are no bad graphics cards, only bad prices. At current pricing, if we prioritize stability first, the 9070 XT is worth considering over the 9070, since manual overclocking brings too many unknowns.
Q7
Is it worth upgrading from the 7900 XT to the 9070 XT?A7
Not necessary.
Q8
Can the Seasonic PX-850 (ATX 2.4) handle a 9070 XT Phoenix Nirvana?
A8
Yes, a proper non-nerfed 850W is fine. I’ve been running a Seasonic GX-850 the whole time.
Q9
This generation didn’t release a reference/public version. Hope the next gen has one.
A9
Actually there is — I’m using one right now.
Q10
Can you leak any info about UDNA?
A10
I haven’t seen the flagship SKU yet, so that’s all I can say for now.
Q11
I bought the cheapest version of the 9070 XT. People online say this card runs really hot with high power consumption and recommend undervolting underclocking (claiming it won’t affect gaming performance). Should I just run it at default, or is it better to drop 10W power limit, 100MHz frequency, and 50mV voltage?
A11
The VBIOS sets the core hotspot temperature limit to 110°C, with VRAM at Samsung 105°C / Hynix 108°C. The card will automatically trigger HW protection (CTF) once it hits those temps. As long as you stay below these limits during normal use, there’s really no need to worry too much — just run it on default settings. If you’re still anxious, it’s also fine to follow popular undervolt/underclock guides online.
Q12
This is the 9070 XT Xingkong — the absolute bottom-tier beggar version with only dual 8-pin power and even one less heatpipe than others. Those online guides that suggest dropping 10W, 100MHz, and 60mV are probably meant for the flagship cards. I’m scared that if I do the same on my budget card, it’ll mess up or crash.
A12
Then just run it on default settings.
Q13
Undervolting the beggar card a little should be fine, right? I just want to know about this.
A13
No problem, but don’t go too hard/aggressive with it. Otherwise you might get frequent crashes, blue screens, or driver drops
Q14
I have the ASRock 9070 XT Challenger with dual 8-pin connectors and Hynix VRAM. While playing Black Myth: Wukong, my core temp is around 70°C but VRAM hits 100°C. Will this temperature damage the card if it runs like this for a long time?
A14
Core temperature is fine, but the VRAM temp is a bit too high. Hynix memory will trigger CTF at 108°C. If possible, contact after-sales support and have it checked. Even for a budget card, it shouldn’t be this bad. If nothing else works, get a professional to replace the VRAM thermal pads.
Q15
I heard that overclocking the 9070 XT is only about undervolting, and you can’t increase the frequency at all? (That’s exactly how I’ve been running it for over a year.)
A15
Internally we don’t research overclocking and won’t go over spec. Stability is the top priority. If you want to learn about this, it’s better to check your specific card’s silicon quality and follow guides from the overclocking community enthusiasts.
Q16
Just passing through with three 9070 XTs. The first one was a Yeston water-cooled version. While gaming, the core hit 105°C. Probably the thermal paste wasn’t applied properly at the factory. After RMA, it dropped to 85°C. Still, compared to the 9070 XT Phoenix Nirvana, its cooling performance isn’t great.
A16
When it first launched, I even thought about buying a Crazy Nirvana to play with myself.
Q17
The store's customer service replied: "We consulted ASRock technical support, and they said that GPU operating temperatures under 90°C, hotspot temperatures under 105°C, and VRAM (memory) temperatures under 110°C are all normal. These fall within AMD's standard allowable range and will not affect normal or long-term use." It feels like they don’t want to help me with this.
A17
This is due to the VBIOS settings. According to them, there’s no issue. In that case, if I don’t care about voiding the official warranty, I’ll just replace it myself or find someone to do it. I should ask the after-sales service what thickness (in mm) the VRAM thermal pads are.
Bro, please don’t take my words and go confront the customer service with them. I’m scared for my life.
Another point is that I’m not responsible for AIB design. Basically, all the board partners take the reference design, make minor modifications to the PCB, and then design their own cooling solution. So I’m not very familiar with the actual performance and cooling performance of each specific AIB card. I’m just looking at it from an engineer’s perspective and I do think the temperatures are a bit high.
Q18
Recently I’ve been thinking of upgrading from my RTX 5060 Ti 16G to an RX 9070 XT, mainly to get more performance. I also plan to use it for AI-related tasks — during my graduate studies I’ll be running machine learning models frequently. I wanted to ask how the AMD GPU (A-card) ecosystem is doing these days. Will I run into a lot of architectures or frameworks that only support NVIDIA cards?
A18
If you’re going to run AI, you should still go with an NVIDIA card. ROCm is being actively developed as a priority, but it’s still far behind NVIDIA. Just for deployment alone, a quick search online will give you tons of NVIDIA tutorials. Don’t make it harder on yourself.
Q19
I bought two RX 9070 XTs, and a few days ago my partner gave me another one Actually, I really wanted a Red Devil — that card has better power delivery, but it doesn’t come with a vapor chamber.
A19
Damn, where can I find such a good partner? I guess I’ll just have to use the cards I got myself.
Q20
Internet rumors say that RDNA4 will have a full 96 CU core next year. Can you disclose anything about this?
A20
So far I haven’t seen any 96 CU SKU.
Q21
Can you show me? I’ve been using the 9070 XT HanKai recently and think it already looks the best among all the brands. Let me see the reference version.
A21
The reference (public version) doesn’t look good. This generation was purely made for engineering validation. DM me and I’ll send you the pictures.
Q22
Can I know what CPU you guys are using?
A22
I have all kinds on hand: 97X, 265K, 8945HX, 9955HX3D.
Q23
Because people always say AMD CPUs have bad 1% lows, poor productivity performance, etc. I wanted to see what actual professionals are using.
A23
Compared to the X3D series in terms of low frames? [doge emoji] There are tons of comparison videos online — let them watch whatever they want. For a lot of professional engineering software, AMD is still perfectly fine. But for productivity work like video editing, it might indeed be weaker than Intel.
Q24 by fake GeekerVan
Bro bro, can I get the AT0 for 15,000?
A24
Oh, you actually know the AT series isn’t simple. For now I can only see the spec information. Until it’s released, I don’t know the pricing either.
Q25
Then can I know if the CU count has broken 100? It won’t still be 96 CU, right?
A25
I haven’t seen the flagship SKU yet.
Q26
Big bro, with my 9700X 9070 XT and an 850W power supply, the 12V rail is 11.8V at idle and drops to 11.6V under load. Do I need to change the PSU? Currently when I use a 1-to-2 8-pin cable to connect the GPU, it crashes as soon as I enter a game.
A26
11.6V is already the lower limit for ATX power supplies, and you're using a 1-to-2 splitter on top of that. You should replace the power supply. I’m also running a 9700X with a 9070 XT. I’m using a Seasonic GX850 and haven’t had any issues. The graphics card is on completely default BIOS settings — I only enabled memory overclocking.
You can try not replacing the power supply first. Reset both the graphics card and the SBIOS (motherboard BIOS) back to completely default settings and test it.
Q27
Can a 750W power supply handle the budget version of the 9070 XT?
A27
Don’t just blindly trust the wattage rating. It depends on your specific platform setup. Plus, the actual quality of the power supply matters more than the advertised wattage — a lot of them are inflated or falsely rated.
Q28
I just want to know when AMD is going to properly support FSR 4.1 for domestic Chinese online games. Every driver update feels like pulling teeth. I think there are way more people playing online games in China, so frame generation is secondary anyway.
A28
the answer is that it’s already being worked on.
The subtext is that they’re short on resources but are still working on it anyway, hahaha.
Q29
Compared to the previous generation 7900 XT, the 9070 XT uses a lot less VRAM in games. People online are saying it’s copying NVIDIA’s trick of “stealing image quality.” The noticeable difference is that distant/far-away scenery looks worse than before. Can you confirm if this is true?
A29
Not sure. I’m HW, not SW.
Q30
I want to ask — I bought an RX 7900 XTX during last year’s Double 11 sale. Is it worth upgrading to the 9070 XT now?
A30
No need.
Q31
Hello, can I ask — after updating the driver recently, when playing CS2, enabling Vertical Sync and the driver’s Image Quality Enhancement Sync (by default) have no effect at all. In-game, the GPU usage suddenly drops, and the frame rate shoots up like crazy. What’s causing this? If I manually toggle the driver switch on or off, vertical sync starts working, but sometimes midway through a match it suddenly stops and starts maxing out frames again. I don’t want it constantly running at 100 FPS. Any solutions?
A31
Did the previous driver version not have this problem? If that’s the case, you can only roll back to the older driver version.
Q32
Bro, why is this generation of AMD cards running such high hotspot temperatures? Mine is sitting at 56/88. On NVIDIA 40-series cards, the hotspot delta is at most 20°C, and usually within 20°C. Is it because the two companies use different hotspot temperature algorithms?
A32
One reason is related to the cooling design. The other is that the latest NVIDIA cards have removed the hotspot temperature reading entirely. What you’re seeing now isn’t the actual Tj (junction) temperature.
Q33
contract? (i guess this is asking about the amd picture posted by the "engineer"
A33
It's already been purple for 4 years.
Q34 (followed by Q33)
Still not approving the transfer?
Though I guess Beijing is mainly Xilinx, right? I really have no idea what RTG does in Beijing.
A34
I’m not part of RTG, I’m GAE. I specifically support customers.
Q35 (followed by Q33 and Q34)
Is it the on-site embedded kind? I know there are GAE positions in Hefei and Kunshan. So you guys are on the Beijing Lenovo side?
A35
You guessed it right haha. But I work at the AMD Lab office. I only go to the customer site when there are project issues.
summary
forum.gamer.com.tw/C.php?bsn…
the video by 深度抠门的数码爱好者
bilibili.com/video/BV1BSLB67…
the engineer yixin3 on bilibili
space.bilibili.com/31823948