7700HQ vs 8250U

[overlockeer]

I have been looking for a new Laptop. I understand that the 45W HQ CPU are supposed to be between 15W U series CPUs and the Desktop counterparts. However the Geekbench scores of the 7700HQ and of the 8250U are more or less identical (4100 and 12500), so what is the point of buying a 7700HQ if it consumes triple the power for the same performance? Am I missing something here?

 

I see the point of the upcoming 8750H, because although the single core performance is not that much faster (geekbench 4600) (edit: turns out that is geekbench3 and the other results are geekbench4, which does not compare), the multi-core performance is a lot higher (around 24000). However if one were to compare this CPU to the 8550u (4500 and 13000; the results for this on fluctuate wildly) it does not look that attractive for a gaming PC anymore. 

 

So what is the point of the 7700hq and why are those U series CPU so close in performance although the consume a third of the power? What am I missing here?

[Electronics Wizardy]

7700hq doesn't use triple the power, thats tdp, and it will use a bit more than the 8250u, but not that much.

 

the 7700hq keep clock under load better and normally has better cooling.

 

 

[deXxterlab97]

1. Laughs at Geekbench cause that is like the worst benchmark. EVER.

8250U has a very low base clock (1.6Ghz) vs (2.8Ghz) and only boosts to 3.4 vs 3.8ghz

plus I think HQ is overclockable and U is not

[Guest Generallee]

5 minutes ago, deXxterlab97 said:

1. Laughs at Geekbench cause that is like the worst benchmark. EVER.

8250U has a very low base clock (1.6Ghz) vs (2.8Ghz) and only boosts to 3.4 vs 3.8ghz

plus I think HQ is overclockable and U is not

Nope that's HK you're thinking about, HQ means it has hyper threaded quad cores, so 8 threads

[TheLaserCucumber]

6 minutes ago, deXxterlab97 said:

1. Laughs at Geekbench cause that is like the worst benchmark. EVER.

8250U has a very low base clock (1.6Ghz) vs (2.8Ghz) and only boosts to 3.4 vs 3.8ghz

plus I think HQ is overclockable and U is not

HK is overclockable, HQ isn't

 

well, @Generallee was about 5s faster than me

[deXxterlab97]

Just now, Generallee said:

Nope that's HK you're thinking about, HQ means it has hyper threaded quad cores, so 8 threads

HQ does not mean HT quad cores cause as been shown a 8250u is also HT

[aisle9]

7 minutes ago, deXxterlab97 said:

1. Laughs at Geekbench cause that is like the worst benchmark. EVER.

8250U has a very low base clock (1.6Ghz) vs (2.8Ghz) and only boosts to 3.4 vs 3.8ghz

plus I think HQ is overclockable and U is not

H SKU means it's soldered to the board, Q SKU means quad-core. You're thinking of HK chips, which there aren't too many of out there IIRC

[Guest Generallee]

Just now, deXxterlab97 said:

HQ does not mean HT quad cores cause as been shown a 8250u is also HT

I should have specified that it does mean that in my head only it's not officially what it means of course

[TheLaserCucumber]

3 minutes ago, deXxterlab97 said:

HQ does not mean HT quad cores cause as been shown a 8250u is also HT

Maybe you could oc those 4th gen HQ chips that they're talking about, but I've had a Laptop with an i7 5700HQ, and you couldn't OC this one. It's the same with the newer 6700HQ and 7700HQ chips.

(My brother has a i7 6700HQ machine, so I know that for sure)

[deXxterlab97]

1 minute ago, aisle9 said:

lol didn't you always kind of hate it deep down?

 

Did not know that HQ chips could overclock. Given the cooling systems that come with most laptops, not sure I'd want to try.

 

Just now, TheLaserCucumber said:

Maybe you could oc those 4th gen HQ chips, but I've had a Laptop with an i7 5700HQ, and you couldn't OC this one. It's the same with the newer 6700HQ and 7700HQ chips.

Just saying they can. Not that you would OC it just so it gets thermal throttled, but hey there is that watercooled laptop right?

 

Yes I hate it so much that I quit. Then came back. I should leave again, for the third time

[General Winter]

honestly you can directly compare the two on intel site and see if you need one over the other, they are both quad core hyper threaded, so its more speed and power difference you'll need to look at

 

but i'd wait for 8th gen HQ at this point if you want more power than battery life

[Lawliet93]

Every intel cpu in the mobile space is overclockable, sort of. You can use throttlestop to make it run at its max turbo frequency and at the same time, you can undervolt it. Intel uses really voltage settings for their skylake and kaby Lake. I got mine i7 6700hq to 3,1GHz with - 165mV on the vcore and - 145mV on the cache 

[TheLaserCucumber]

5 minutes ago, General Winter said:

but i'd wait for 8th gen HQ at this point if you want more power than battery life

agreed, wait for 8th Gen H chips (They're not called 8xxxHQ anymore )

The H i7 and i9 chips will have 6c/12t while the i5 are going to have 4c/8t.

The advantages with the H i5 will be higher clocks, don't even think more cache.

But, as said, the i7 and i9s wil have 6c/12t, so that's something to wait for.

5 minutes ago, deXxterlab97 said:

 

Just saying they can. Not that you would OC it just so it gets thermal throttled, but hey there is that watercooled laptop right?

 

Yes I hate it so much that I quit. Then came back. I should leave again, for the third time

The 5700HQ and 6700HQ can't (at least not in the Aorus X3 plus V4 and V5).

There are no BIOS options, and the clocks are locked in Intel XTU.

Pretty sure this watercooled, completely useless, Asus thingy uses an HK chip.

[genexis_x]

18 minutes ago, overlockeer said:

so what is the point of buying a 7700HQ if it consumes triple the power for the same performance?

Because they usually can sustain all core turbo speed under long, heavy load due to higher TDP rating. They DON'T consumer triple the power, TDP doesn't mean power consumption. 8250U also can quite match the performance of 7700HQ with some tuning (I addressed it in my Aspire 5 review) like good cooling system, higher PL1, undervolting and even some minor underclocking

[genexis_x]

22 minutes ago, deXxterlab97 said:

1. Laughs at Geekbench cause that is like the worst benchmark. EVER.

8250U has a very low base clock (1.6Ghz) vs (2.8Ghz) and only boosts to 3.4 vs 3.8ghz

plus I think HQ is overclockable and U is not

Agree. Cinebench is the most accurate IMO

 

Base clock is literally useless since the clock speed is way higher than that under load. 3.8GHz is single boost clock in 7700HQ, its all core boost clock is 3.4GHz. 8250U boost to 3.4GHz in single core and all core load. HQ is locked, HK is overclockable

[Lawliet93]

5 minutes ago, TheLaserCucumber said:

agreed, wait for 8th Gen H chips (They're not called 8xxxHQ anymore )

The H i7 and i9 chips will have 6c/12t while the i5 are going to have 4c/8t.

The advantages with the H i5 will be higher clocks, don't even think more cache.

But, as said, the i7 and i9s wil have 6c/12t, so that's something to wait for.

The 5700HQ and 6700HQ can't (at least not in the Aorus X3 plus V4 and V5).

There are no BIOS options, and the clocks are locked in Intel XTU.

Well, you can make them run on their max turbo speed, which is kind of similar to overclocking 

[deXxterlab97]

1 minute ago, ZM Fong said:

Agree. Cinebench is the most accurate IMO

 

Base clock is literally useless since the clock speed is way higher than that under load. 3.8GHz is single boost clock in 7700HQ, its all core boost clock is 3.4GHz. 8250U boost to 3.4GHz in single core and all core load. HQ is locked, HK is overclockable

some cpu won't turbo boost on all cores so base clock is somewhat still matters

[genexis_x]

9 minutes ago, Lawliet93 said:

Every intel cpu in the mobile space is overclockable, sort of. You can use throttlestop to make it run at its max turbo frequency and at the same time, you can undervolt it.

Not every laptop model can do the all core OC trick. Mine is locked. Only can undervolt.

[genexis_x]

1 minute ago, deXxterlab97 said:

some cpu won't turbo boost on all cores so base clock is somewhat still matters

Even under extreme situations (eg power throttling under load), the clock speed is still usually higher than the base clock (most 8250U runs at >2GHz under long period heavy multi core load without thermal throttling)