New Vega 64 Red Devil shutting down PC

orbitalwalsh · 24 Aug 2018 at 15:03

Formula 750w is you want the cheapest decent unit

then move up the range to focus/antec/corsair/bequiet etc

Panos · 24 Aug 2018 at 15:09

RatmanGB said:
Good advice, thanks - I set it to power save mode in Wattman and it's stable.

So, new PSU required! Any suggestions for a good replacement? I'd like to experiment with a bit of overclocking too.

STOP HERE.
BUY NOTHING NEW.

Does the card work on Turbo mode & Balanced mode?

If so have a look here and try those settings. Cooler dependent, is 240W-270W power consumption (less than Turbo mode) and 25400-26011 graphic score on Firestrike.
(again heat depedent)

https://forums.overclockers.co.uk/posts/32057078/

Is very good overclock also on that low power, and beats the GTX1080 @ 2164.

Also try the settings with both BIOS positions.
You need to have the computer OFF to switch.

And if you haven't done it, use DDU in windows safe mode to wipe out everything AMD & Nvidia related.
Then install fresh the 18.8.1.

Let us know in the Vega discussion how it goes.

Please note you need to have connected both the 8 pin power connectors straight from the PSU and no other device getting power from the same cables.

I have seen a lot of mistakes and corner cutting when comes to Vega 64 on this and other focums.

Marine-RX179 · 24 Aug 2018 at 16:44

RatmanGB said:
I'd be grateful for any suggestions on troubleshooting. It feels like it might be power related but my PSU should be up to the job. I can't mention the brand name as it's an OCUK competitor, but it's an 850 watt unit.

I cannot think of etailer or retailer that has own brand PSU...are you sure they are count as competition to OcUK?

I mean for my system, I am using my pretty aged Corsair TX650 and it has no problem powering my overclocked system along with the Sapphire Vega 64 Nitro+. I'm guessing that "850W" PSU is some generic ones which the max output that's something less than 50% of the PSU itself (i.e. max output over 12v rail 400W or something).

If you are worrying about mentioning the brand, could you may be have a look at the power ratings on the side of your PSU and see what it says the max output for the 12v rail is?

RatmanGB · 24 Aug 2018 at 17:05

Marine-RX179 said:
I cannot think of etailer or retailer that has own brand PSU...are you sure they are count as competition to OcUK?

I mean for my system, I am using my pretty aged Corsair TX650 and it has no problem powering my overclocked system along with the Sapphire Vega 64 Nitro+. I'm guessing that "850W" PSU is some generic ones which the max output that's something less than 50% of the PSU itself (i.e. max output over 12v rail 400W or something).

If you are worrying about mentioning the brand, could you may be have a look at the power ratings on the side of your PSU and see what it says the max output for the 12v rail is?

According to the side of the unit, there are four 12v rails, two rated at 20A, two at 30A and a total wattage across all four of 750w.

nashathedog · 24 Aug 2018 at 17:26

JediFragger said:
@nashathedog Didn't you end up buying a new psu with your first Vega? £200 850w something?

Hi, First off I got an 850 watt Corsair HX850 which caused horrendous coil whine, I even tested it with my old card which was silent previously and it whined too so I sent that back, I then got an 860 watt platinum Seasonic Prime which seems to be a good one.

nashathedog · 24 Aug 2018 at 17:33

RatmanGB said:
Good advice, thanks - I set it to power save mode in Wattman and it's stable.

So, new PSU required! Any suggestions for a good replacement? I'd like to experiment with a bit of overclocking too.

Never cheap out when buying a PSU, I did once and it took a brand new Asus 560ti with it when it went. I'd buy a minimum of an 850 watt PSU for Vega, Go for one that's Gold or Platinum rated.

NovaKill4 said:
I'm using one of these for my 1080ti:
My basket at overclockers uk:

1 x Seasonic Focus Plus 850W 80 Plus Gold Modular Power Supply= £124.99

Total: £135.49 (includes shipping: £10.50)

This is similar to mine and I think that's decently priced.

Marine-RX179 · 24 Aug 2018 at 17:33

RatmanGB said:
According to the side of the unit, there are four 12v rails, two rated at 20A, two at 30A and a total wattage across all four of 750w.

Something's not adding up:
20A= 240W
30A= 360W

The information is missing the combine max output in amp for the 12v rail. If the 750W for the max output of the 12 rail is true, and it should also say it as 62.5A.

What does it say for the max combined output in amp for the 12 rail (make sure it does not include other rails such as 3.3v, 5v etc)? If you could take a picture of the label (but leaving out/edit out the brand name) and post it here it would be even better.

Panos · 24 Aug 2018 at 18:13

RatmanGB said:
According to the side of the unit, there are four 12v rails, two rated at 20A, two at 30A and a total wattage across all four of 750w.

When you bought it? There is something wrong on the calculations, and if is true multi rail then you going to have issues.
Single rail 12v PSU are the best ones. Multiple rail ones are cheap and not good enough to push with safety the power needed to top range components.

melmac · 24 Aug 2018 at 18:25

nashathedog said:
Never cheap out when buying a PSU, I did once and it took a brand new Asus 560ti with it when it went. I'd buy a minimum of an 850 watt PSU for Vega,.

I agree never buy a cheap PSU. But, you don't need 850Watts for a single Vega card. Ran mine on a 650W PSU and have a ton of other stuff installed, 5 hard drives, sound card, USB adapter card, LEDs, 4 fans, Oculus Rift with 4 sensors and didn't have any problems at all.

ZenBaz · 24 Aug 2018 at 20:00

Mine seems to be running good on a Coolermaster 750W that set me back 65 bucks last year (think they go for around 90 now). Don't cheap out on PSU but don't break the bank either

nashathedog · 24 Aug 2018 at 20:06

melmac said:
I agree never buy a cheap PSU. But, you don't need 850Watts for a single Vega card. Ran mine on a 650W PSU and have a ton of other stuff installed, 5 hard drives, sound card, USB adapter card, LEDs, 4 fans, Oculus Rift with 4 sensors and didn't have any problems at all.

I'm no expert but I think there's a big variation in how much power Vega requires going from chip to chip, When Vega released I hadn't long before bought a 650 watt EVGA G2. My Vega ran okay but whenever I tried to overclock or use the performance setting the system would shut down (this was with the AIO though), I can't say for sure that was why the PC was shutting down under load but due to AMD stating you need a 750 watt psu and that experience I went higher to rule the power draw out as a potential cause of problems.

RatmanGB · 24 Aug 2018 at 22:17

Attempting to link a picture of the side of my PSU...

Kelt · 24 Aug 2018 at 22:37

Ask Gibbo how good the PSU is....he used to work there!

Gibbo · 24 Aug 2018 at 22:45

Wattage does not equal quality.

Unbranded PSU's are generally rubbish, generally a reason why they are cheap.

Best brands by far are Super Flower, Seasonic, I'd probably not bother with other brands, lot of junk out there.
Kolink as a cheap brand are generally very good, but ifs the good old if you have a high-end PC, why run it on a poor PSU, you don't buy a Ferrari and put supermarket unleaded in, well actually probably some do, its not a good idea though if you want to make the claimed horsepower.

A quality 650W be fine, but a cheap 1000W could be problematic.

Gibbo · 24 Aug 2018 at 22:48

RatmanGB said:
Attempting to link a picture of the side of my PSU...

Multi rail PSU, amperage is sub parr, but try running the VEGA from seperate rails, it might give it more amps.
By that I mean each rail will have 2 PCI-E connectors, use only one from each rail, it might help.

Average PSU, not something I'd use for a high-end graphics card.

RatmanGB · 25 Aug 2018 at 09:41

I do also have one of these available, if I want to take two PCs to bits:

Any better or do I really need something a lot more modern?

Panos · 25 Aug 2018 at 09:57

RatmanGB said:
I do also have one of these available, if I want to take two PCs to bits:

Any better or do I really need something a lot more modern?

If it does have 2 8 pin PCI-E connectors from the PSU then use it. If it is one of those cheap having 1, and the second needs to be connected on molex leave it.

Also have you connected all the power plugs on the motherboard? And not referring to to the 24 pin connector but the others.

But as Gibbo said. Superflower is absolutely amazing PSU. I listened to him and bought the 1000W Platinum back in September 2014 (they were cheap £126). It even powered an overclocked 295X2 who needed 640W on it's own.

JediFragger · 25 Aug 2018 at 10:05

Panos said:
It even powered an overclocked 295X2 who needed 640W on it's own.

My Coolermaster 1000w Silent Gold Pro powered a [email protected], 295x2 and a 290X in Trifire with no problems :cool:

Kelt · 25 Aug 2018 at 13:04

RatmanGB said:
I do also have one of these available, if I want to take two PCs to bits:

Any better or do I really need something a lot more modern?

I have had the same model running for almost eleven years, and it's been nothing less than stellar.

See my rig for what it's currently powering + 6 HDD.

Awesome and inaudible PSU.

RatmanGB · 26 Aug 2018 at 12:16

Thanks for everyone's advice, I ended up with a Corsair RM850x. Maybe not the absolute best, but everything's working fine, even in OC mode on the card and turbo mode in Wattman, and with my CPU overclock restored.

And I didn't have to steal the Cooler Master 850 from my other half's PC, which now has my old MSI GTX 970 sitting alongside an Asus Strix in a not very attractive SLI combination.