Monday, October 6th 2025

Intel Core Ultra X9/X7/X5 "Panther Lake-H" and "Panther Lake-U" Configurations Leak

by
AleksandarK
 Discuss (23 Comments)
Intel's upcoming "Panther Lake" processors have been leaked, revealing what the company has in store for consumers. As Intel's first major 18A-node product, Panther Lake has a lot to prove, from power efficiency to performance. According to previous rumors, there will be two Panther Lake SKU categories: Panther Lake-H and the lower-TDP Panther Lake-U. These SKUs are expected to be part of the Core Ultra 300 series, Intel's latest branding scheme that even includes an X after the Core Ultra designation. The X moniker is said to enhance the internal GPU to 12 Xe3 cores, giving Panther Lake the capability to handle demanding graphics tasks. The top-tier Core Ultra X9 is expected to feature up to four P-cores, eight E-cores, and four additional LPE-cores, along with 12 Xe3 cores. Details on power configurations and clock speeds are anticipated to be revealed on the rumored launch date of October 9.
Below, you can check out the Core Ultra X9/X7/X5 SKUs:

  • Core Ultra X9 388H: 4 P-Cores, 8 E-Cores, 4 LPE-Cores, 12 Xe3 Cores
  • Core Ultra X7 368H: 4 P-Cores, 8 E-Cores, 4 LPE-Cores, 12 Xe3 Cores
  • Core Ultra X7 358H: 4 P-Cores, 8 E-Cores, 4 LPE-Cores, 12 Xe3 Cores
  • Core Ultra X5 338H: 4 P-Cores, 4 E-Cores, 4 LPE-Cores, 10 Xe3 Cores
Here are the regular PTL-H SKUs:
  • Core Ultra 9 375H: 4 P-Cores, 8 E-Cores, 4 LPE-Cores, 4 Xe3 Cores
  • Core Ultra 7 355H: 4 P-Cores, 8 E-Cores, 4 LPE-Cores, 4 Xe3 Cores
  • Core Ultra 7 345H: 4 P-Cores, 8 E-Cores, 4 LPE-Cores, 4 Xe3 Cores
  • Core Ultra 5 325H: 4 P-Cores, 4 E-Cores, 4 LPE-Cores, 4 Xe3 Cores
And finally, here are the PTL-U SKUs:
  • Core Ultra 7 360U: 4 P-Cores, 0 E-Cores, 4 LPE-Cores, 4 Xe3 Cores
  • Core Ultra 5 350U: 4 P-Cores, 0 E-Cores, 4 LPE-Cores, 4 Xe3 Cores
  • Core Ultra 5 340U: 4 P-Cores, 0 E-Cores, 4 LPE-Cores, 4 Xe3 Cores
  • Core Ultra 3 320U: 2 P-Cores, 0 E-Cores, 4 LPE-Cores, 4 Xe3 Cores
Sources: Golden Pig Upgrade, Chiphell

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23 Comments on Intel Core Ultra X9/X7/X5 "Panther Lake-H" and "Panther Lake-U" Configurations Leak

#2
vbq7qK68eyYAH4iR
Mere Mortal
The Core Ultra X9 388H and the Core Ultra X7 368H, with their 12Xe cores could be pretty banging. 50% more than the 258V and they're Xe3. Given that the 258V gives the Z2 Extreme a run for its money, I'm excited!
Posted on Reply
#3
mikesg
Not very promising if they're only 15/28w and do not have a 55w HX version....

No upgrade path for many high-end laptops.
Posted on Reply
#4
lexluthermiester
vbq7qK68eyYAH4iRThe Core Ultra X9 388H and the Core Ultra X7 368H, with their 12Xe cores could be pretty banging. 50% more than the 258V and they're Xe3. Given that the 258V gives the Z2 Extreme a run for its money, I'm excited!
Exactly. These could, if they perform as well as they're supposed to, give competition to AMD Ultra portable Ryzen line up. Could be a great time for handhelds.
mikesgNot very promising if they're only 15/28w and do not have a 55w HX version....

No upgrade path for many high-end laptops.
These are not intended for highend laptops. These are Intel's ultra portable line.
Posted on Reply
#5
kondamin
mikesgNot very promising if they're only 15/28w and do not have a 55w HX version....

No upgrade path for many high-end laptops.
i think those are made with desktop chips.


maybe we'll know a bit more on friday
Posted on Reply
#6
SL2
I thought CUltra vas a good abbreviation, but CUX is even better. Has a nice ring to it. :peace:

There are no desktop models coming, right?
Posted on Reply
#7
lexluthermiester
SL2There are no desktop models coming, right?
That has not been announced, but it's likely sooner or later.
Posted on Reply
#8
ncrs
mikesgNot very promising if they're only 15/28w and do not have a 55w HX version....

No upgrade path for many high-end laptops.
Don't worry, according to coreboot's platform configuration they can boost up to 175W ;)
This is quite a legitimate source since Intel employees committed the code. Whether this configuration makes into an actual device is another matter.
Posted on Reply
#9
Nostras
The most interesting SKU's are the 358H, 345H and 340U.
Bit of a shame the naming says nothing about the core configuration, but what's new.
I do wonder if the LPE cores are good enough.
I'm using an 12800H right now, the 340U could be an interesting upgrade as I don't need the multi-core performance.
If the LPE cores are a bit weak then perhaps the 345H. The X chips are overkill if you don't need the iGPU performance.
It's exciting to know that Intel is at least very competitive in the mobile space.
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#10
dgianstefani
TPU Proofreader
NostrasThe most interesting SKU's are the 358H, 345H and 340U.
Bit of a shame the naming says nothing about the core configuration, but what's new.
I do wonder if the LPE cores are good enough.
I'm using an 12800H right now, the 340U could be an interesting upgrade as I don't need the multi-core performance.
If the LPE cores are a bit weak then perhaps the 345H. The X chips are overkill if you don't need the iGPU performance.
It's exciting to know that Intel is at least very competitive in the mobile space.
AFAIK the LPE cores should be as strong as the E cores. But they're on their own power island, so the rest of the chip can be powered down and they remain active.
Posted on Reply
#11
watzupken
vbq7qK68eyYAH4iRThe Core Ultra X9 388H and the Core Ultra X7 368H, with their 12Xe cores could be pretty banging. 50% more than the 258V and they're Xe3. Given that the 258V gives the Z2 Extreme a run for its money, I'm excited!
Intel’s current Lunar Lake Core Ultra 258V is a very capable and power efficient chip. But objectively, I think it’s not a fair comparison with AMD’s current gen APU. The reason is because Lunar Lake is based on more advanced 3nm, while the latter is on 4nm (essentially an improved 5nm). So I do think AMD did quite well given the fab disadvantage. Will be good to see how Intel 18A competes with TSMC on the newer chips though.
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#12
ToTTenTranz
The 358H and 368H look like they should be great on gaming handhelds.
Especially as Strix Point was such a letdown in how little gaming performance it brought over Phoenix and Hawk Point.
Posted on Reply
#13
TheinsanegamerN
ToTTenTranzThe 358H and 368H look like they should be great on gaming handhelds.
Especially as Strix Point was such a letdown in how little gaming performance it brought over Phoenix and Hawk Point.
Last time I checked, the 40cu 8060s in strix halo crushes AMD's 16cu point series GPUs. IDK how 3x the performance can bee see as a "let down" but what I CAN tell you is that Intel's execution has been terrible for years, if you think this new 12 core intel iGPU is gonna blow your socks off, you will be quite disappointed.
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#14
kondamin
watzupkenIntel’s current Lunar Lake Core Ultra 258V is a very capable and power efficient chip. But objectively, I think it’s not a fair comparison with AMD’s current gen APU. The reason is because Lunar Lake is based on more advanced 3nm, while the latter is on 4nm (essentially an improved 5nm). So I do think AMD did quite well given the fab disadvantage. Will be good to see how Intel 18A competes with TSMC on the newer chips though.
N3b the node intel is using at tsmc is a bad node apple did the fastest full refresh ever to get away from it.
I think it's odd intel didn't opt for n4 and hasn't gone to n3e for the refresh of arrow lake
Posted on Reply
#15
dgianstefani
TPU Proofreader
kondaminN3b the node intel is using at tsmc is a bad node apple did the fastest full refresh ever to get away from it.
I think it's odd intel didn't opt for n4 and hasn't gone to n3e for the refresh of arrow lake
It's not a 'bad node', it's just not a big jump from N4.
Posted on Reply
#16
_roman_
I see a lot of software problems. Intel seems to go the android mobile qualcom route. Offering three different cpu types for a single processor. I see heavy lag incoming in any operating system.
Posted on Reply
#17
kondamin
dgianstefaniIt's not a 'bad node', it's just not a big jump from N4.
Yields were poor so i'm sticking to my opinion of 'bad node' and my puzzlement sticking with it for the arrow lake refresh.
Posted on Reply
#18
lexluthermiester
kondaminYields were poor so i'm sticking to my opinion of 'bad node' and my puzzlement sticking with it for the arrow lake refresh.
You can stick with your opinion. Just an FYI, any yields above 60% make for a profitable wafer. Intel rarely goes to market with yields lower than 75%. So there is that..
Posted on Reply
#20
lexluthermiester
dgianstefaniAFAIK the LPE cores should be as strong as the E cores. But they're on their own power island, so the rest of the chip can be powered down and they remain active.
That's my understanding as well.
Posted on Reply
#21
ToTTenTranz
TheinsanegamerNLast time I checked, the 40cu 8060s in strix halo crushes AMD's 16cu point series GPUs. IDK how 3x the performance can bee see as a "let down" but what I CAN tell you is that Intel's execution has been terrible for years, if you think this new 12 core intel iGPU is gonna blow your socks off, you will be quite disappointed.
They aim for different market segments. Although it shines at 35-55W, STX Halo probably costs 3x more to make than STX Point and doesn't offer that much of an upgrade at 15-20W.

Panther Lake should be a direct competition to STX Point in price, and it might be significantly faster at 15W-25W.
Posted on Reply
#22
mikesg
ToTTenTranzSTX Halo probably costs 3x more to make than STX Point and doesn't offer that much of an upgrade at 15-20W.
Strix Halo is ~25FPS faster at 25W in Cyberpunk compared to Strix Point and Phoenix. Strix Point & Phoenix only had ~5FPS between them.

ETA Prime:

If Panther Lake has a jump in base clock speeds (thanks to backside power delivery/powervia) it would be very competitive against Strix Point..
Posted on Reply
#23
vbq7qK68eyYAH4iR
Mere Mortal
watzupkenIntel’s current Lunar Lake Core Ultra 258V is a very capable and power efficient chip. But objectively, I think it’s not a fair comparison with AMD’s current gen APU. The reason is because Lunar Lake is based on more advanced 3nm, while the latter is on 4nm (essentially an improved 5nm). So I do think AMD did quite well given the fab disadvantage. Will be good to see how Intel 18A competes with TSMC on the newer chips though.
I get what you're saying but that's the choice AMD made and these two products are on the market right now, competing. It's worth noting their differences but at the end of the day, features and performance are what matter, not that AMD has a different node. Maybe things would be different if AMD could use a newer node but in the world we live in, it's a fair comparison, I think.

This isn't even taking into consideration that the Intel chips get to use the ML version of XeSS, because of their XMX hardware, but AMD's are stuck with the DP4A XeSS or FSR3.1 upscalers, which is an incredibly important consideration for this form of device.
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