Intel Core Ultra X9 388H beats predecessor in PassMark debut

Intel’s Panther Lake flagship finally showed up in PassMark, and yeah, it is clearly bullying its own predecessor.

Panther Lake finally hits PassMark

• The Core Ultra X9 388H just landed its first PassMark result.
• This is the flagship chip in Intel’s Core Ultra Series 3 lineup.
• Until now, it only showed up in Geekbench leaks.

The quick verdict

• Multi-threaded performance jumps are real.
• Single-core gains are modest but steady.
• The iGPU leap is doing a lot of the heavy lifting.

How it stacks up against last gen

• The comparison target is the Core Ultra 9 285H.
• In PassMark, the 388H posts close to a 10 percent lead in multi-threaded tests.
• One entry even shows around a 17 percent bump, though results vary.

Single-core stays familiar

• Single-core scores mostly line up with the 285H.
• One run shows a slight edge for the 388H.
• No miracles here, just incremental gains.

Why the gains matter

• Both chips carry the same core count.
• The internal layout is not the same.
• Panther Lake swaps two Performance cores for two LP-E cores.
• The focus shifts toward efficiency without tanking throughput.

Clocks and power tell part of the story

• The 388H boosts up to 5.1 GHz.
• The 285H reaches higher peak clocks at 5.4 GHz.
• Despite that, the newer chip still pulls ahead.
• TDP is lower on the 388H, which makes the win cleaner.

The iGPU gap is not subtle

• The 388H uses Arc B390 graphics.
• That iGPU is miles ahead of what the Core Ultra Series 2 offered.
• This is one of the biggest visible upgrades in Panther Lake.

Context from earlier leaks

• Geekbench already showed the 388H dominating the 285H.
• It even traded punches with Ryzen AI Max+ 395.
• PassMark just reinforces the same trend.

Why this is a solid upgrade

• Better multi-threaded output.
• Much stronger integrated graphics.
• Improved efficiency profile.
• All without increasing core count.

The takeaway

• Panther Lake is not a sideways refresh.
• The Core Ultra X9 388H clearly outpaces its predecessor.
• If you are coming from Core Ultra Series 2, this one finally feels worth it.