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Review: Intel Broadwell-H Core i7 5775C processor
We review the new Intel Core i7 5775C processor developed at a 14nm node these processors are a notch more energy friendly. Join us as we look at the performance of this processor in a wide variety of benchmark, will it be noticeably more tweakable than say the Core i7 4770 or 4790 ? Let's find out shall we.
Read the full review right here.
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Ryu5uzaku
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#5122466 Posted on: 07/15/2015 11:40 AM
Broadwell is like moot point if you got even Ivy bridge unless you really really want 14nm -.- Mine clocks to 4.8 :<
At least Intel upped their IGP game. I want to see if AMD has done anything in the past year for their IGP. Since this new iris is barely faster then 7850 on that field, else it is way faster ofc
Great review as always.
Broadwell is like moot point if you got even Ivy bridge unless you really really want 14nm -.- Mine clocks to 4.8 :<
At least Intel upped their IGP game. I want to see if AMD has done anything in the past year for their IGP. Since this new iris is barely faster then 7850 on that field, else it is way faster ofc
Great review as always.
Hilbert Hagedoorn
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Don Vito Corleone
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#5122477 Posted on: 07/15/2015 12:15 PM
HH, is it possible that you got worse sample yet? That overclock is just so bad. First overclock on 5775c (a month ago) showed it can reach 5Ghz at 1.4v+.
And people thought they'll upgrade from Haswell to Broadwell, lol.
No I checked with some other media, and most of us all reach this level of OC.
HH, is it possible that you got worse sample yet? That overclock is just so bad. First overclock on 5775c (a month ago) showed it can reach 5Ghz at 1.4v+.
And people thought they'll upgrade from Haswell to Broadwell, lol.
No I checked with some other media, and most of us all reach this level of OC.
MasterBash
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#5122490 Posted on: 07/15/2015 12:44 PM
I dont understand the power consumption. 4770k is 2w more @ 3.5ghz vs broadwell at 3.3ghz. 4790k @ 109w and it runs at 4.0ghz .
14nm doesnt seem to help much... or at all. Unless the other processors were tested with more power efficient hardware, but I doubt it.
I am guessing stock voltage is higher to be able to get stable clocks at default? Then that would defeat the purpose of the power saving of 14nm. Other than that I cant figure out why that would happen. Considering there is a dedicated gpu, its definitely not caused by the iGPU.
The very slight per core performance boost isnt worth it. Its basically haswell with a better iGPU.
Disappointed in 14nm atm.
I dont understand the power consumption. 4770k is 2w more @ 3.5ghz vs broadwell at 3.3ghz. 4790k @ 109w and it runs at 4.0ghz .
14nm doesnt seem to help much... or at all. Unless the other processors were tested with more power efficient hardware, but I doubt it.
I am guessing stock voltage is higher to be able to get stable clocks at default? Then that would defeat the purpose of the power saving of 14nm. Other than that I cant figure out why that would happen. Considering there is a dedicated gpu, its definitely not caused by the iGPU.
The very slight per core performance boost isnt worth it. Its basically haswell with a better iGPU.
Disappointed in 14nm atm.
Turanis
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#5122498 Posted on: 07/15/2015 01:08 PM
Great review.
But yep this new cpus not worth it.Next year will be better.
They push the Iris Pro 6k but the cpu has only 6mb smart cache.hmm
Compare Intel® Products
Great review.
But yep this new cpus not worth it.Next year will be better.
They push the Iris Pro 6k but the cpu has only 6mb smart cache.hmm
Compare Intel® Products
southamptonfc
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#5122504 Posted on: 07/15/2015 01:26 PM
It's really hard to see the point of this CPU. It's more expensive, slower than the previous generation 4790K, it doesn't overclock as well either.
It's like Intel thought "Well we've produced loads of these, might as well try and sell them". Surely deviating from the normal naming convention is an admission that these are really oddball CPUs.
It's really hard to see the point of this CPU. It's more expensive, slower than the previous generation 4790K, it doesn't overclock as well either.
It's like Intel thought "Well we've produced loads of these, might as well try and sell them". Surely deviating from the normal naming convention is an admission that these are really oddball CPUs.
Toss3
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#5122513 Posted on: 07/15/2015 01:50 PM
Hmm did you just alter the core voltage and multiplier? If so you really should increase the vccin and limit the cache to 4Ghz. A lot of people were stuck on haswell overclocking because they were trying to stick with the recommended 1:1 ratio, which doesn't really matter and only limits your max oc. Got 4.6 stable easily after actually putting some effort into it (was stuck on 4.3Ghz before and my system refused to boot at 4.6 at any voltage).
Hmm did you just alter the core voltage and multiplier? If so you really should increase the vccin and limit the cache to 4Ghz. A lot of people were stuck on haswell overclocking because they were trying to stick with the recommended 1:1 ratio, which doesn't really matter and only limits your max oc. Got 4.6 stable easily after actually putting some effort into it (was stuck on 4.3Ghz before and my system refused to boot at 4.6 at any voltage).
XpoLon
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#5122521 Posted on: 07/15/2015 02:11 PM
It's really hard to see the point of this CPU. It's more expensive, slower than the previous generation 4790K, it doesn't overclock as well either.
It's like Intel thought "Well we've produced loads of these, might as well try and sell them". Surely deviating from the normal naming convention is an admission that these are really oddball CPUs.
It's not slower. Clock for clock Broadwell is up to 7-8% ahead. There are plenty of reviews out there - go and check them out.
Here for example:
tweaktown.com/articles/7222/intel-core-i7-5775c-3ghz-broadwell-lga-1150-cpu-performance-overview/index7.html
maximumpc.com/intel-broadwell-dt-core-i7-5775c-review/
techspot.com/review/1028-intel-core-i7-5775c-broadwell/page10.html
p.p. Stupid that all of the reviewers are overclocking with ES, not retail, that could be better or worse in that regard.
It's really hard to see the point of this CPU. It's more expensive, slower than the previous generation 4790K, it doesn't overclock as well either.
It's like Intel thought "Well we've produced loads of these, might as well try and sell them". Surely deviating from the normal naming convention is an admission that these are really oddball CPUs.
It's not slower. Clock for clock Broadwell is up to 7-8% ahead. There are plenty of reviews out there - go and check them out.
Here for example:
tweaktown.com/articles/7222/intel-core-i7-5775c-3ghz-broadwell-lga-1150-cpu-performance-overview/index7.html
maximumpc.com/intel-broadwell-dt-core-i7-5775c-review/
techspot.com/review/1028-intel-core-i7-5775c-broadwell/page10.html
p.p. Stupid that all of the reviewers are overclocking with ES, not retail, that could be better or worse in that regard.
Hilbert Hagedoorn
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#5122522 Posted on: 07/15/2015 02:18 PM
Yep, VCCIN configured up-to 1.950V at one point. Did not make a difference.
Hmm did you just alter the core voltage and multiplier? If so you really should increase the vccin and limit the cache to 4Ghz. A lot of people were stuck on haswell overclocking because they were trying to stick with the recommended 1:1 ratio, which doesn't really matter and only limits your max oc. Got 4.6 stable easily after actually putting some effort into it (was stuck on 4.3Ghz before and my system refused to boot at 4.6 at any voltage).
Yep, VCCIN configured up-to 1.950V at one point. Did not make a difference.
Solfaur
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#5122565 Posted on: 07/15/2015 03:27 PM
As expected, nothing special. As many said before, performance wise anything from 2600K on at +4GHz is pretty damn solid, at least in games. I'd still be on my 3770K if my old mobo wouldn't have died on me, so yeah... I'm looking forward to the day when we'll see massive performance gains again, but that won't happen if AMD (or maybe another company?) won't step up their game. Maybe DX12 and Windows 10 will change things up a bit, we'll see.
As expected, nothing special. As many said before, performance wise anything from 2600K on at +4GHz is pretty damn solid, at least in games. I'd still be on my 3770K if my old mobo wouldn't have died on me, so yeah... I'm looking forward to the day when we'll see massive performance gains again, but that won't happen if AMD (or maybe another company?) won't step up their game. Maybe DX12 and Windows 10 will change things up a bit, we'll see.
Raider0001
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#5122573 Posted on: 07/15/2015 03:38 PM
I hope they make like i5 5430K for 150 bucks, that would be my goal, to start over-clocking cheap silicon again...
I hope they make like i5 5430K for 150 bucks, that would be my goal, to start over-clocking cheap silicon again...
schmidtbag
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#5122589 Posted on: 07/15/2015 04:11 PM
For someone buying a brand new PC, doesn't intend to overclock, and has something older than a Sandy Bridge system, this isn't a bad option. It's power efficiency is what stands out the most, in my opinion.
On the note of the IGP, yeah, it might be better than an A10, but the i7 is also much more expensive and it wouldn't surprise me if the A10's memory controller and CPU is a bottleneck. Seriously AMD needs to get going on triple or quad channel memory - the IGP is starving for more bandwidth.
For someone buying a brand new PC, doesn't intend to overclock, and has something older than a Sandy Bridge system, this isn't a bad option. It's power efficiency is what stands out the most, in my opinion.
On the note of the IGP, yeah, it might be better than an A10, but the i7 is also much more expensive and it wouldn't surprise me if the A10's memory controller and CPU is a bottleneck. Seriously AMD needs to get going on triple or quad channel memory - the IGP is starving for more bandwidth.
Fox2232
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#5122609 Posted on: 07/15/2015 04:40 PM
Question is if going out of sync does not reduce efficiency.
One should be sure that higher clock bring proportionally higher performance.
Hmm did you just alter the core voltage and multiplier? If so you really should increase the vccin and limit the cache to 4Ghz. A lot of people were stuck on haswell overclocking because they were trying to stick with the recommended 1:1 ratio, which doesn't really matter and only limits your max oc. Got 4.6 stable easily after actually putting some effort into it (was stuck on 4.3Ghz before and my system refused to boot at 4.6 at any voltage).
Question is if going out of sync does not reduce efficiency.
One should be sure that higher clock bring proportionally higher performance.
kinggavin
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#5122652 Posted on: 07/15/2015 06:02 PM
for me right now this cpu and the 4790k are waste of money there so close in price to a 5820k 6 core you might aswell just go x99 because its gonna cost u around the same and u get a 6 core cpu, and for a gaming pc we need see after batman arkham knight how much effort these developers will put in pc ports , and windows 10 will you need a lot of cpu cores, will overclocking a cpu make any difference in games i think wait see what happen with the new software win 10 and dx12 before upgrade any cpu
for me right now this cpu and the 4790k are waste of money there so close in price to a 5820k 6 core you might aswell just go x99 because its gonna cost u around the same and u get a 6 core cpu, and for a gaming pc we need see after batman arkham knight how much effort these developers will put in pc ports , and windows 10 will you need a lot of cpu cores, will overclocking a cpu make any difference in games i think wait see what happen with the new software win 10 and dx12 before upgrade any cpu
icedman
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#5122679 Posted on: 07/15/2015 06:56 PM
Im not too impressed even with the die shrink its only about 11w less power then my ancient 3770k. O well i still hardly even max out what i got im more worried about how long my mobo will last.
Im not too impressed even with the die shrink its only about 11w less power then my ancient 3770k. O well i still hardly even max out what i got im more worried about how long my mobo will last.
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HH, is it possible that you got worse sample yet? That overclock is just so bad. First overclock on 5775c (a month ago) showed it can reach 5Ghz at 1.4v+.
And people thought they'll upgrade from Haswell to Broadwell, lol.