The Stilt
Golden Member
- Dec 5, 2015
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Out of interest do you have the VFMADD132PD 256bit latency/ TP numbers? same as CPC's?
cheers
Accurate for 128-bit but no idea what happens with 256-bit (i.e 2 ops), sorry.
Out of interest do you have the VFMADD132PD 256bit latency/ TP numbers? same as CPC's?
cheers
Exactly. Where's YOUR link for 81W max power draw?How could you say it's 75%? Link? Or it's a guess? And 81W it's a theoretical limit. Probabily it's under 75W...
Ammeter is used to check the DC line current.The ammeter on what? If it's the wall it's obvious... There are the VRMs and PSU losses...
Exactly. Where's YOUR link for 81W max power draw?
Ammeter is used to check the DC line current.
The other approximations have never quite been reliable enough to use, since the Phenom days at least. Usually always low balling the actual DC power.
I'm not sure why we have to keep rehashing these things with every new chip.
Sent from HTC 10
(Opinions are own)
Well, since you're offering, can you please post the exact same calculation for the 6900K in that test?Do you want a drawing?
Well, since you're offering, can you please post the exact same calculation for the 6900K in that test?
Can you please be more accurate than that?Moreless the same that Zen.
Can you please be more accurate than that?
In case you feel you're missing some data, let me help you - idle to load delta for 6900K system was 85W.
Reference idle power usage for a 14nm 4c Intel core chip is:
- 9W @ 4Ghz w/o C states
- 3.5W @ 800Mhz w/o C states
- 1.8W with C states enabled
Is there a reason that amd only has talked about their 8c 16t ryzen? Should we be worried about 4c 8t and 6c 12t?
Exactly.I think they might not clock as high as Intel as they are salvaged 8c16t parts.
Sometimes it really takes tons of patience to lead the horse to the water.Idle power of the 6900K is 18W, i already posted the numbers but seems that whatever doesnt suit some public is simply ignored, hence the forever redundant and useless debate by here..
Notice that someone said that Hardware.fr numbers are anectdotical, yet he once stated that such numbers would be meaningfull if measured at the 12V CPU rail, wich is exactly what HFR are doing, it s telling about the extent of the bad faith in this thread.
Is there a reason that amd only has talked about their 8c 16t ryzen? Should we be worried about 4c 8t and 6c 12t?
I think they might not clock as high as Intel as they are salvaged 8c16t parts.
How many skus have been confirmed? 4?The proper 4c8t part will be the APU, which will come later. I find talking mostly about the lead product that you are actually about to ship to be quite sensible.
The unlocked Pentiums had no problems clocking high. The FX 6300 was streching it's legs as well.Why would a salvaged part not clock as high?
Salvage =/= Bin
Is there any correlation between a salvaged part and the typical bin of that part?
Congrats, you made it on pcgameshardware.de
http://www.pcgameshardware.de/Mainb...X370-B350-Vergleich-Intel-Chipsaetze-1218450/
AMD Ryzen: AMDs X370 und B350 im Vergleich zu Intels Chipsätzen
Quelle: PC Games Hardware
2) Yet you tried to extrapolate Zen power consumption from that - different platform, unknown motherboard consumption, unknown idle consumption...
I'm a fan of AMD but everyone needs to distinguish between what has some factual support in the confirmed information and what is just thinly-veiled speculation or mistaken extrapolation.
Look at my reference data again, multiply those figures by 2x and see how they land against the data from HFR.
Do we have any idea on how both CPUs were configured from a power management perspective during the presentation? Think about it.
I was talking of this video:Can you please be more accurate than that?
In case you feel you're missing some data, let me help you - idle to load delta for 6900K system was 85W.
Reference idle power usage for a 14nm 4c Intel core chip is:
- 9W @ 4Ghz w/o C states
- 3.5W @ 800Mhz w/o C states
- 1.8W with C states enabled
Take a look at the numbers I posted for reference power usage, then take a look at the HFR table you quoted. Ask yourself why is it that SB-E in that table only uses 6W, while HSW-E and BDW-E go to 16W and 21W respectively. What parameters other than semiconductor process characteristics greatly affect idle power usage?
I tested SMPS ATE units... I know all this. I'm not talking about any of it.Have you seen the New horizon video pre-conference of december 8th?
Difference between load and idle is 94W (moreless, i don't remember exactly).
Then the calculations are straightforward.
For IDLE powers, there are tons of reviews in which the power is measured at the 12V that show less than 5W in idle.
Do you want links? Do you want a link for efficiencies of VRM or PSUs? Do you want a drawing?
Google for VRM efficiency and PSU efficiency and you will find upper limits for that. I repeat: 88% for VRMs and 90% for PSUs. If you think that are false, post a link...
http://www.infineon.com/dgdl/pswus03vrmdesign.pdf?fileId=5546d462533600a4015357483c833fc2 Here there are also graph. 88% is the max efficiency and it's at 70 Ampere. Over 100A drops at 86% for a 6-phases and lower for less phases.
http://www.corsair.com/en-us/blog/2...at-does-it-mean-and-what-is-the-benefit-to-me This is a good 1200W PSU 80+ gold. At 144W (12%) the efficiency is 90%. Obviously you should take away the monitor and the system alone will draw under 144W...
Where came from your 75%? From your mind? Post a link or a reasoning, otherwise it's of no value.
Ok, so the TDP was 125W and the measured power was 140W? I assume on the 12V.
140W*.88=123.2W.
Below 125W. And i was generous because over 70A the efficiency is lower than 88%...
I'm telling you to check previous CPU data and compare your methodology of actual power draw compared to how accurate it is for them.
Q9650 used to show as 60W full load in P95 with your 'deductive' methodology a la ~50W with Blender.
That Blender scene is not full load or max power, why does this have to be spelt out to you? It is lower than average load.
It is evident that KL i7s will be the CPU of choice for those who want absolute best ST performance because IPC+ better OC could result in up to ~20% better one thread performance. Ryzen will definitely be a right choice for almost anyone else due to superior price/perf. ratio.
Interestingly Canard PC measured SR's VFMADD132PD throughput to be 2x BR's throughput, or the same as KL (2/cycle).
SQRTPD gets executed on just 1 unit, DIVPD, too, while VDIVPD has a bit better throughput.
Edit:
I just found out about two new articles by Hiroshige Goto (auto translated to Googlish):
The integer unit of AMD's next generation CPU "ZEN" is completely different from the Bulldozer series
Floating point / SIMD unit of AMD next generation CPU "ZEN" of relatively mature design
I never questioned the validity of HFR data, you seem hell bent on the idea that I want to discard the 18W power figure for BDW-E.You re using irrelevant data, mainstream CPUs are not triple channel HEDT, that s not even the same die at all, so it s not Hardware.fr who is in the wrong but your inadequate methodology.
And I was talking about the same video.I was talking of this video:
https://youtu.be/EsVNQYwlSAo?t=2m18s