Kitz Forum

Broadband Related => FTTC and FTTP Issues => Topic started by: adslmax on September 02, 2021, 07:02:52 PM

Title: G.fast v two pc's
Post by: adslmax on September 02, 2021, 07:02:52 PM
I finally found out why G.fast dislike my new AMD Ryzen PC as I lose 35Meg chunk off everytime I powered up the pc, I check again when the pc switched off as it went back to higher sync rate on my old pc Intel Sandybridge i7 2700K pc as I got the dslstats to check it when I switched on and off on my new AMD Ryzen 3700X.

AMD PC switched on:

Downstream 176Meg

AMD PC switched off:

Downstream 211Meg

Both pc switched off: (checking via my mobile phone via Zyxel router sync)

Downstream 237Meg

Can't believe it  :( Why do high end pc caused G.fast big drop in sync rate. Good job I have find out myself.

Can you all users with G.fast check it with pc on and off to see if your G.fast does affect the big drop in sync rate.

Title: Re: G.fast v two pc's
Post by: Alex Atkin UK on September 02, 2021, 07:29:40 PM
Are they plugged in near the phone line/router?  Could it be they use crap PSUs that are throwing out a lot of interference?  Are they wired into the router, if so can you try wireless, if not can you try wired?

Clearly some sort of radio frequency interference is being transferred from the PCs to the router, the question is where, why, and is there anything we can do to reduce it?
Title: Re: G.fast v two pc's
Post by: adslmax on September 02, 2021, 07:37:49 PM
My PSU sent back to overclockers as it went dead after few months as it was bequiet PSU Gold plus 80 be straight 750W. Link here: https://forums.overclockers.co.uk/threads/bequiet-straight-power-11-gold-80plus-750w-are-dead.18935065/

I am using spare bequiet 600W Bronze 80 plus on my AMD PC.

The two pc's are upstair. Intel pc using wireless 1900AC, AMD pc using ethernet all the way to downstair to the router by the master socket in the hallway.

You could be right could be crappy PSU that cause G.fast drop of 35Meg chunk off. I can't believe it but glad I found out myself.
Title: Re: G.fast v two pc's
Post by: bkehoe on September 02, 2021, 07:53:54 PM
I've seen RFI with mine when using a PoE switch - chops around 30MBit off the attainable. Seems to insert the RFI into the cat5 cables which run alongside the phone line

So I use old fashioned POE injectors and my shiny POE switch is just working as a dumb switch.
Title: Re: G.fast v two pc's
Post by: meritez on September 02, 2021, 11:15:15 PM
Is this with the zyxel or the Openreach modem?
Title: Re: G.fast v two pc's
Post by: adslmax on September 02, 2021, 11:18:55 PM
zyxel
Title: Re: G.fast v two pc's
Post by: meritez on September 03, 2021, 12:03:14 AM
If you connect the Openreach modem to the zyxel, does it sync any higher?
Title: Re: G.fast v two pc's
Post by: re0 on September 03, 2021, 12:33:56 AM
I've not noticed any difference to sync/attainable based on whether my PC is on or off. And, in my case, the computer is about 2m away from the modem/router, and is even closer to the master socket.

I use the EVGA G3 750 with the Ryzen 7 3700X.

I am inclined to believe it is RFI from the PSU. It seems like you've isolated it successfully anyway.
Title: Re: G.fast v two pc's
Post by: adslmax on September 03, 2021, 03:09:35 AM
My psu could be rubbish one from bequiet via overclockers due to very poor RFI. By interesting reading here https://www.ukqrm.org.uk/smps.php
Title: Re: G.fast v two pc's
Post by: adslmax on September 03, 2021, 03:11:38 AM
I've not noticed any difference to sync/attainable based on whether my PC is on or off. And, in my case, the computer is about 2m away from the modem/router, and is even closer to the master socket.

I use the EVGA G3 750 with the Ryzen 7 3700X.

I am inclined to believe it is RFI from the PSU. It seems like you've isolated it successfully anyway.

You won't noticed any difference because your gfast got the maximum sync rate full on 330/50
Title: Re: G.fast v two pc's
Post by: re0 on September 03, 2021, 05:07:42 AM
You won't noticed any difference because your gfast got the maximum sync rate full on 330/50
It could still impact the attainable. Anyway, honestly hoping to jump ship from G.fast by the end of the year.
Title: Re: G.fast v two pc's
Post by: adslmax on September 03, 2021, 05:21:14 AM
yeah I will quit g.fast next year in May 2022 when my contract has ended will join BT Home Essentials (only use G.fast for 12 months only) then downgrade back to FTTC 80/20 next year. Don't think I wouldn't get any FTTP for a long while yet probably end of 2025!
Title: Re: G.fast v two pc's
Post by: adslmax on September 03, 2021, 09:00:13 AM
Stats recorded 03 Sep 2021 08:50:19

DSLAM type / SW version:   BDCM:0xc190 (193.144) / v0xc190
Modem/router firmware:     AnnexA version - A2pvfbH045o.d27j
DSL mode:                  G
Status:                    Showtime
Uptime:                    1 day 3 hours 28 min 49 sec
Resyncs:                   1 (since 03 Sep 2021 08:45:16)
         
            Downstream   Upstream
Line attenuation (dB):     35.3      0.0
Signal attenuation (dB):   35.3      0.0
Connection speed (kbps):   229832      42527
SNR margin (dB):           2.9      2.9
Power (dBm):               0.0      4.1
Interleave depth:                
INP:                       551.00      607.00
G.INP:                     Not enabled      Not enabled
Vectoring status:          Unknown      

RSCorr/RS (%):             0.0016      0.0025
RSUnCorr/RS (%):           0.0000      0.0000
ES/hour:                   0      0
Title: Re: G.fast v two pc's
Post by: Alex Atkin UK on September 03, 2021, 01:02:03 PM
My psu could be rubbish one from bequiet via overclockers due to very poor RFI. By interesting reading here https://www.ukqrm.org.uk/smps.php

I got the impression BeQuiet are an okay brand, was using them in my server for years.  Then again PSUs are a pain as every brand has good and bad models.

I'm much more careful about the specific models I buy and getting them from a reputable retailer though after one of my PSUs went up in smoke many years back.
Title: Re: G.fast v two pc's
Post by: Ixel on September 03, 2021, 05:42:06 PM
I got the impression BeQuiet are an okay brand, was using them in my server for years.  Then again PSUs are a pain as every brand has good and bad models.

I'm much more careful about the specific models I buy and getting them from a reputable retailer though after one of my PSUs went up in smoke many years back.

Definitely. PSUs are one of the most important components to consider when building a system or replacing a PSU. As a person who has regularly repaired or built computers locally, I've seen my fair share. Definitely go with brands that are reputable, not cheap and cheerful, otherwise it may (worst case) risk the entire system's components going with it if it happens to go 'bang'.
Title: Re: G.fast v two pc's
Post by: adslmax on September 04, 2021, 12:19:37 AM
Next Thursday mean it will be 28 days since overclockers sent it back to bequiet. Haven't heard anything back yet but overclockers did say on email either repaired item return within 28 days otherwise a replacement a new psu or full refunded if my choice on day 28 but there seem customers complaint about overclockers 28 days is either calander days or working days.

I just hoping that's next Thursday I can ask overclockers I have the rights to have full refunded so I can purchase different brand psu maybe a new corsair rmx 750w gold plus.

Can you suggest me which psu brand are the most reliable and stable one.

Title: Re: G.fast v two pc's
Post by: Alex Atkin UK on September 04, 2021, 01:25:35 AM
Mine are Corsair RM650x and RM850x.
Title: Re: G.fast v two pc's
Post by: banger on September 04, 2021, 01:28:00 AM
Ive had a Corsair go pop.
Title: Re: G.fast v two pc's
Post by: Ixel on September 04, 2021, 11:36:43 AM
Next Thursday mean it will be 28 days since overclockers sent it back to bequiet. Haven't heard anything back yet but overclockers did say on email either repaired item return within 28 days otherwise a replacement a new psu or full refunded if my choice on day 28 but there seem customers complaint about overclockers 28 days is either calander days or working days.

I just hoping that's next Thursday I can ask overclockers I have the rights to have full refunded so I can purchase different brand psu maybe a new corsair rmx 750w gold plus.

Can you suggest me which psu brand are the most reliable and stable one.

I generally go for Seasonic or Corsair (I'm pretty sure Corsair's might be mostly based on Seasonic's), never had one fail on me. Of course there will be an extremely rare time someone will get a defective one. I also make sure mine are plugged into a surge protector or alternatively a mains conditioner block (such as a Tacima 6 Way Mains Conditioner).
Title: Re: G.fast v two pc's
Post by: toonshorty on September 04, 2021, 12:24:37 PM
Ive had a Corsair go pop.

I think it really depends on the model. Like most PSU brands, they are effectively just rebadged units from various OEMs (https://www.realhardtechx.com/index_archivos/Page447.htm), with possibly some small tweaks.

A lot of the premium Corsair PSUs are generally excellent, but the cheaper ones like the CX/VS series had a bit of a mixed reputation.

The PSU tier list is always a good reference: https://linustechtips.com/topic/1116640-psu-tier-list/
Title: Re: G.fast v two pc's
Post by: parkdale on September 04, 2021, 02:29:59 PM
I would go for a Seasonics GX750 or Phanteks Amp 750 same unit but cheaper!! https://www.kitguru.net/components/power-supplies/zardon/phanteks-amp-750-power-supply-review/ both have a 10 year warranty. The only difference is supplied cabling.

I've had a Corsair TX650v2 for 9 years, just a rebadged Seasonic S12ll, it pays to stay with top tier manufacturers.
Title: Re: G.fast v two pc's
Post by: adslmax on September 04, 2021, 10:11:04 PM
I still got 12 years old 700W icute AP-700AS on my old intel i7 2700K pc computer with 14 years warranty on it in 2012. Brought it £99.99 from Maplins Telford Store. Very quiet and never let me down.

Title: Re: G.fast v two pc's
Post by: toonshorty on September 04, 2021, 10:34:17 PM
Very quiet and never let me down.

That's probably more luck if I'm honest; I'm not sure I'd put an "iCute" PSU anywhere near a PC I remotely cared about.

They really pushed their luck on that 700W rating as well. It's not uncommon to see a the total output of the 12V rail(s) be equal to or at least close to the headline rating of the unit. That unit seems to have 2x 12V rails with 20A each, providing a total of 480W. You'd maybe get away with calling that a 500W PSU, albeit not a very good one.
Title: Re: G.fast v two pc's
Post by: adslmax on September 04, 2021, 10:39:00 PM
Yeah it seem fine with Intel i7 2700K (95W) as it got no graphic card. It got Intel® HD Graphics 3000 on it. Seem fine watch Netflix, You tube 1080P. That's iCute PSU are fine with Intel PC total of less 400W.
Title: Re: G.fast v two pc's
Post by: Alex Atkin UK on September 05, 2021, 03:28:59 AM
I used generic PSUs for years and also had no problems, ironically it was once I moved to a brand (Antec) that I had my first PSU blow up on me.

Still, I'd not risk it today, there's really no reason to.
Title: Re: G.fast v two pc's
Post by: tommy45 on September 08, 2021, 01:07:35 AM
 EVGA make some good PSU's like this one https://www.box.co.uk/EVGA-SuperNova-750W-P2-80-PLUS-Platinum-_1807980.html
Title: Re: G.fast v two pc's
Post by: adslmax on September 08, 2021, 05:38:56 AM
Updated: Overclockers has shipped my replacement PSU (good as new) so I was disappointed as they should have asked me first do you want it replacement or have fully refunded instead before they shipping it out.

OverclockersUK
   
Tue, 7 Sept, 16:41 (12 hours ago)
   
to me
Dear *****************, Your Order has been packed and is in the process of being shipped.

IMPORTANT: Please note that any orders shipped after 7pm on a weekday by our night team will not be collected by DPD until the following day.

----------------------------------------------------------
Goods Shipped:
£0.00 x 1 - be quiet! Straight Power 11 750W 80 Plus Gold Modular Power Supply (replacement faulty same item)

----------------------------------------------------------
Goods Shipped By: DPD Next Day (Mon-Fri).

Title: Re: G.fast v two pc's
Post by: Alex Atkin UK on September 08, 2021, 06:38:55 PM
Indeed, according to Toms Hardware (https://www.tomshardware.com/uk/reviews/be-quiet-straight-power-11-650w-platinum-power-supply-review) (though this is the Platinum not the standard Gold):

    Expensive
    The protection features are not configured correctly
    Not so high overall performance
    One of the EPS cables has two of these connectors
    High Vampire Power
    Lower than 70% efficiency with 2% load
    Mediocre soldering quality

You'd expect much better from a Platinum rated PSU, especially the 2% load and high vampire power.

Strangely looking at other reviews, the Gold seems to review better than the Platinum, but its hard to quantify as not all reviewers measure the actual performance.

Curious, if you look at the LTT Tier List.

High Quality
be quiet! | Dark Power 12 [non-Pro] - Straight Power 11 Gold =>750W / Platinum <=750W

Lower Quality
be quiet! | Dark Power 12 [non-Pro] - Straight Power 11 Gold <=650W / Platinum =>850W

Although they're still both considered Tier A so not bad.