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Using RX480 without 6/8 pins?
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FNK
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Videocard: XFX GTR 480 XXX
Processor: 3570K @4GHz
Mainboard: Asus Maximus V Gene
Memory: DDR3-2000 16Gb
Soundcard: X-FI Supreme III
PSU: Corsair RM650
Default Using RX480 without 6/8 pins? - 05-03-2017, 02:02 | posts: 2,762 | Location: Quebec, Canada

Hello to Guru3D,

I am trying to diagnose if either my PSU or mobo is dying, PCIE lanes.

If I tries to boot the PC without the PCIE connector, it will not boot. Screen stay black, no bios boot.
RX480 + 8 pins = partial boot until 3D mode is active.
RX480 no connector = no boot
Onboard = pc work fine
Should the PC boot to Win10 even without power connectors?
   
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KissSh0t
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Videocard: ASUS RX 470 Strix Gaming
Processor: AMD FX 8320
Mainboard: ASUS M5A97 R2.0
Memory: G.Skill Ripjaws X F3 8GB
Soundcard: X-Fi XtremeMusic
PSU: Corsair HX650W
Default 05-03-2017, 02:20 | posts: 4,975 | Location: 0.0.0.0

From what you describe here it looks like your psu does not provide enough power for the whole system with the video card installed.

Have you tried a different power supply? preferably a higher wattage one.

For a system like that I would imagine something around 800W would be required right?

Last edited by KissSh0t; 05-03-2017 at 02:23. Reason: spelling
   
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sykozis
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Videocard: XFX RX 470
Processor: AMD Ryzen 5 1600
Mainboard: MSI B350 Tomahawk
Memory: Corsair DDR4-2666
Soundcard: Realtek....
PSU: Corsair CX750M
Default 05-03-2017, 03:06 | posts: 19,869 | Location: US East Coast

Quote:
Originally Posted by FNK View Post
RX480 + 8 pins = partial boot until 3D mode is active.
What exactly happens at this point?

Quote:
Originally Posted by FNK View Post
Should the PC boot to Win10 even without power connectors?
Not using the RX 480, no. The card needs more than 75watts to function.

Quote:
Originally Posted by KissSh0t View Post
From what you describe here it looks like your psu does not provide enough power for the whole system with the video card installed.

Have you tried a different power supply? preferably a higher wattage one.

For a system like that I would imagine something around 800W would be required right?
That RM650 can easily power the OP's system...lol

That RM650 is capable of outputting up to 648watts on it's single 12V rail.

Your system draws a lot more power than the OP's does....



Last edited by sykozis; 05-03-2017 at 03:09.
   
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KissSh0t
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Videocard: ASUS RX 470 Strix Gaming
Processor: AMD FX 8320
Mainboard: ASUS M5A97 R2.0
Memory: G.Skill Ripjaws X F3 8GB
Soundcard: X-Fi XtremeMusic
PSU: Corsair HX650W
Default 05-03-2017, 03:31 | posts: 4,975 | Location: 0.0.0.0

Really?

I would have thought a 480 draws more power than a 470, plus his system has 16GB of ram and an overclocked i5 whereas I have 8GB and default clocked FX.

@FNK, do you have a friend that you could borrow a power supply from to test your system?
   
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koniu
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Videocard: Palit GTX1070 SJS
Processor: i7 4790k
Mainboard: MSI B85-G43
Memory: 16GB Crucial Tactical
Soundcard: Realtek® ALC892
PSU: Corsair RM550x
Default 05-03-2017, 08:39 | posts: 86 | Location: Poland

He can run it on decent 500W PSU. Power draw of full PC is ~300-350W. without oc (GPU ~150W, CPU-80W, 70-100W Mobo, Ram, fans, HDDs etc)
If he oc it to max maybe he will hit 400-450W in benchmarks but not it real live scenarios. So RM650 is more that he need.

1. You need PCI-E cables connected to boot RX480
2. If PC boot with cables connected but fail in 3D mode, this mean 2 things.
A. Your GPU is defective.
B. Your PSU is defective.

I would barrow from someone new PSU and connect it. IF PC boot You will need new PSU if PC fail to boot i will test it with different GPU with similar TDP to be sure it is 100% GPU.

Last edited by koniu; 05-03-2017 at 08:51.
   
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FNK
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Videocard: XFX GTR 480 XXX
Processor: 3570K @4GHz
Mainboard: Asus Maximus V Gene
Memory: DDR3-2000 16Gb
Soundcard: X-FI Supreme III
PSU: Corsair RM650
Default 05-03-2017, 10:10 | posts: 2,762 | Location: Quebec, Canada

Okay thank for the feedback;

1. GPU us was fine (RMAed a working card) and they sent me a brand new one that they quality tested. Card is not the problem.
2. Win10 boot the "loading rings", but fail to enter Windows interface. PSU load should be minimal even in 3D aero mode.
3. I did manage to boot to Windows 1 time after a whole driver clean. But Driver installation failed, Windows froze and had to hard reset.
   
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Paulo Narciso
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Videocard: ASUS Strix GTX 1080 Ti
Processor: Intel Core I7 4770K
Mainboard: ASUS Z87 PRO
Memory: G.Skill TridentX 2400 16G
Soundcard: Soundblaster Z
PSU: Corsair HX-850
Default 05-05-2017, 22:31 | posts: 1,087 | Location: Lisbon

Put everything at stock including the ram, and test it with only one stick (1333mhz).
   
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Maddness
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Videocard: Asus RX480 Strix
Processor: 6900k
Mainboard: Rampage V Edition 10
Memory: 16Gb Dominator DDR4 3400
Soundcard: Asus Xonar STX
PSU: Corsair 1200
Default 05-06-2017, 06:52 | posts: 370 | Location: Auckland

Quote:
Originally Posted by Paulo Narciso View Post
Put everything at stock including the ram, and test it with only one stick (1333mhz).
Yep, that's a good place to start. Also disconnect any excess hard drives, fans and other plug in devices. Just start with the bare minimum.
   
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airbud7
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Videocard: MSI RX 480 ARMOR 4G OC
Processor: i7-2600k (Thanks sykozis)
Mainboard: ASRock H61icalf
Memory: 8GB G.S DDR3 1600 --TK--
Soundcard: Xonar DX
PSU: PC Power&Cooling S61EPS
Default 05-08-2017, 17:16 | posts: 4,099 | Location: Beech Island SC,USA

Quote:
Originally Posted by koniu View Post
A. Your GPU is defective.
B. Your PSU is defective.

I would barrow from someone new PSU and connect it. IF PC boot You will need new PSU if PC fail to boot i will test it with different GPU with similar TDP to be sure it is 100% GPU.

This^...The fact that pc runs fine with onboard video sure points at psu/gpu...

maybe pci-e slot but I doubt it.
   
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FNK
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Videocard: XFX GTR 480 XXX
Processor: 3570K @4GHz
Mainboard: Asus Maximus V Gene
Memory: DDR3-2000 16Gb
Soundcard: X-FI Supreme III
PSU: Corsair RM650
Default 05-14-2017, 17:19 | posts: 2,762 | Location: Quebec, Canada

Hey guys,

As an update;
I've successfully found an older video card (to rule out compatibility of newer cards) that is also less power hungry, a Geforce 550TI (1x 6pin molex), that run on PCIE gen 2 (Port push 50W vs gen 3 75W if I am not mistaken).

1. Bios recognized the card,
2. Windows 10 still did not boot past the loading rings...

So what can I rule out, or make out of this test?
   
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vase
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Videocard: -
Processor: -
Mainboard:
Memory:
Soundcard:
PSU: -
Default 05-14-2017, 17:44 | posts: 1,653 | Location: #1 http://www.3dmark.com/fs/8257155

Quote:
Originally Posted by FNK View Post
So what can I rule out, or make out of this test?
Try another OS (i.e. Linux Live-CD or a Win7 install on different partition, 20GB is enough).
Or try fresh install of W10 Creators Edition ( download from https://www.microsoft.com/software-download/windows10 ) without tinkering around with drivers at any point.
   
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airbud7
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Videocard: MSI RX 480 ARMOR 4G OC
Processor: i7-2600k (Thanks sykozis)
Mainboard: ASRock H61icalf
Memory: 8GB G.S DDR3 1600 --TK--
Soundcard: Xonar DX
PSU: PC Power&Cooling S61EPS
Default 05-18-2017, 00:54 | posts: 4,099 | Location: Beech Island SC,USA

Quote:
Originally Posted by FNK View Post
Hey guys,

As an update;
I've successfully found an older video card (to rule out compatibility of newer cards) that is also less power hungry, a Geforce 550TI (1x 6pin molex), that run on PCIE gen 2 (Port push 50W vs gen 3 75W if I am not mistaken).

1. Bios recognized the card,
2. Windows 10 still did not boot past the loading rings...

So what can I rule out, or make out of this test?
See post #9...start there and not with another video card.
   
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