Newer Intel core i7 slower than predecessor?

[eselquinoa]

Hi all

I'm considering two models of new laptop which have nearly identical processors, one has the 3615QM and the other has the 3635QM. It should be easy, the 3635QM is slightly newer and according to PCMarkOnline, it is just a faster version of the 3615QM. (http://www.pcmarkonline.com/tag/core-i7-3630qm/: "Core i7-3630QM and i7-3635QM are slightly faster successors of i7-3610QM and 3615QM SKUs.")

However, when I check a "PassMark" benchmark it's the other way around: the 3635QM has a benchmark of 4821 and the 3615QM has a benchmark of 7329 (http://www.cpubenchmark.net/high_end_cpus.html)

Not sure what the benchmark is testing, but is the older CPU really the much more capable one? The difference seems quite significant.

Thanks for any advice.

 

[IntelEnthusiast]

http://ark.intel.com/compare/64900,71460

I don't know where they got their benchmarks but there is very few differences between these processors except for the 100MHz speed difference. In order for their to be that big of a difference something else was different between the test units.

 

[eselquinoa]

OK thanks. No chance of a manufacturing or weird software issue then I guess.

FWIW an anecdotal report of odd slowness on a new 3635QM laptop:

"I picked up the new Windows 8 version of this laptop, and I'm a little disappointed in the performance, and can't figure out why it's doing this. early in this thread, devsk reported "wprime finishes 32M in 8.72seconds with all 8 threads"- my np700z7c-s01ub socres 32M = 35.587 sec (*). I would love to keep this laptop, but will return it if I can't figure out why it's behaving this way. This one has the 3635QM processor. This laptop feels slower than my old Dell XPS 1647 i5."

http://forum.notebookreview.com/samsung/660337-new-samsung-series-7-np700z7c-s01us-laptop-i7-3615qm-650m-review-181.html

I'll keep an eye out for more benchmark reports -- this is keeping me from pulling the trigger on the laptop for now.

 

[eselquinoa]

(never mind saw the edit that it was a software problem on that laptop!!)

 

[gordon88]

Hi all

I'm considering two models of new laptop which have nearly identical processors, one has the 3615QM and the other has the 3635QM. It should be easy, the 3635QM is slightly newer and according to PCMarkOnline, it is just a faster version of the 3615QM. (http://www.pcmarkonline.com/tag/core-i7-3630qm/: "Core i7-3630QM and i7-3635QM are slightly faster successors of i7-3610QM and 3615QM SKUs.")

However, when I check a "PassMark" benchmark it's the other way around: the 3635QM has a benchmark of 4821 and the 3615QM has a benchmark of 7329 (http://www.cpubenchmark.net/high_end_cpus.html)

Not sure what the benchmark is testing, but is the older CPU really the much more capable one? The difference seems quite significant.

Thanks for any advice.

The main difference I saw are;
one is a PGA the other a BGA (soldier directly on Motherboard)

So I don't see any reason of cpu being slower.
Just that the only known manufacturer who use it seems Samsung.
Did they do a lousy implementation ?
Was test ran in Battery mode ?

Anyway doesn't increase dispersion over of numerous tests

Anyway also be carefull;
Samsung user review all complain on bad screen (no contrast; black is grey) I agree I saw that it is ... so old bad quality