420W PSU to little for my Graphic?

[ethanbajc]

Hi good folk, i recently ran on a little theoretical issue, my computer runs perfectly normal, i did not encounter any issues so far, but i'm wondering if i would purchase better psu, would my graphic card get to full potencial and if i'm slowing it down with my current PSU.(also my graphic card recommendation is 500W power supply, but i had no issues with my psu and I recently found out about that)

My computer specifications are:

CPU: Intel Core 2 Extreme QX6800 @ 2.93GHz
GPU: 1024MB ATI AMD Radeon HD 6950(3Fans, recommended 500W PSU)
https://www.gigabyte.com/Graphics-Card/GV-R695OC-1GD#ov
RAM: 8,00GB Dual-Channel DDR2 @ 400MHz
MOTHERBOARD: Intel Corporation D975XBX2 (J3E1)
DISK: 119GB MTFDDAK128MAM-1J1 ATA Device (SATA (SSD))
PSU: LC6420 V1.3 - Super Silent Series
http://www.lc-power.com/en/product/netzteile/super-silent/lc6420-v13/
MONITOR: 24" Samsung SyncMaster (1920x1200@60Hz) 16:10

I also included links to PSU and GPU if someone would like to check.
I would also like to include that this PSU has only one 6pin plug and this graphic card needs 2x6 so the second one is plugged in via molex adapter (2xmolex into 6pin)

Thank you all for your answers,

Have a good one!

 

[jankerson]

No, it's WAY under specs...

That's not a 420W PSU, more like 360W.... If it can supply that much.

 

[WildCard999]

Do not use a molex to 6-pin adapter for a GPU, if the PSU doesn't have the required connections then get a good quality PSU that does.

 

[jankerson]

Do not use a molex to 6-pin adapter for a GPU, if the PSU doesn't have the required connections then get a good quality PSU that does.

Yeah, they can if they want to burn their house down.

 

[ethanbajc]

I am using one molex only, second one is from my PSU, so it has one 6pin, it just doesn't have 2 6pin, but how is my computer working good so than? i have no problems, should i have more FPS if i would buy better psu than?

 

[ko888]

Your LC6420 V1.3 - Super Silent Series is deficient in its combined +12 Volt continuous current rating by at least 6 Amps.

 

[Dark Lord of Tech]

You need a new PSU with the right specs for the setup. Adapters are a bad idea with under-powered and poor power supplies.

 

[ethanbajc]

Ok than i will buy new PSU ASAP, what should i look for, i read something about those amps like ko888 mentioned but which numbers should i look into, and what PSU Wattage do you guys recommend, thank you all for future answears, really apreciate it

 

[delaro]

I am using one molex only, second one is from my PSU, so it has one 6pin, it just doesn't have 2 6pin, but how is my computer working good so than? i have no problems, should i have more FPS if i would buy better psu than?

2 molex to 1x 6pin PCIE isn't that bad to use on low to medium range cards, 1 molex to 1x 6pin PCIE is asking for trouble. Most people here have a issue with using them at all but in the right situations they are fine.

LC6420 V1.3 - Super Silent Series has a peak output of 360W and is not using very high-quality parts, it may work for you but the question is for how long. Output tends to degrade over time with all units but cheaper ones tend to be more dramatic. Your using around 270 W so a 450W of good quality would work but a 500W would be optimal and not leave you with the "How long is this thing going to last question".

 

[kerberos_20]

PCPartPicker part list / Price breakdown by merchant

Power Supply: SeaSonic - EVO Edition 620W 80+ Bronze Certified Fully-Modular ATX Power Supply ($39.90 @ B&H)
Total: $39.90
Prices include shipping, taxes, and discounts when available
Generated by PCPartPicker 2018-09-19 14:56 EDT-0400

 

[Dark Lord of Tech]

https://funtech.si/si/vsi-oddelki/komp/napajalniki/atx-modularni/od-500w-do-599w/59924/

OR

https://funtech.si/si/vsi-oddelki/komp/napajalniki/atx-standardni/od-500w-do-599w/57813/

 

[ethanbajc]

I am using one molex only, second one is from my PSU, so it has one 6pin, it just doesn't have 2 6pin, but how is my computer working good so than? i have no problems, should i have more FPS if i would buy better psu than?

2 molex to 1x 6pin PCIE isn't that bad to use on low to medium range cards, 1 molex to 1x 6pin PCIE is asking for trouble. Most people here have a issue with using them at all but in the right situations they are fine.

LC6420 V1.3 - Super Silent Series has a peak output of 360W and is not using very high-quality parts, it may work for you but the question is for how long. Output tends to degrade over time with all units but cheaper ones tend to be more dramatic. Your using around 270 W so a 450W of good quality would work but a 500W would be optimal and not leave you with the "How long is this thing going to last question".

Yes i'm using 2xmolex into 6pin + 6pin from my PSU

 

[DSzymborski]

I am using one molex only, second one is from my PSU, so it has one 6pin, it just doesn't have 2 6pin, but how is my computer working good so than? i have no problems, should i have more FPS if i would buy better psu than?

Because that's not how this works. You only know if the PSU is "working good" by using a very expensive load tester to look at the voltage regulation, ripple, and an analysis of the parts contained within. Knowing whether your PC works or not isn't enough, in the same way that a cardiologist evaluates if a heart is working through medical tests, not by just assuming that the heart is working well because the person is not dead.

And since most people do not have very expensive load testers or the knowledge to do any of that, you minimize your risk by buying PSUs from known platforms that have been tested publicly and with detailed rundowns of the parts. You won't get that from one of these ultra-cheapo Chinese firestarters.

Honestly, if you're running that PSU with a 7950 on Molex, I would never even leave the house without making sure the PC is turned off.

 

[delaro]

I am using one molex only, second one is from my PSU, so it has one 6pin, it just doesn't have 2 6pin, but how is my computer working good so than? i have no problems, should i have more FPS if i would buy better psu than?

Because that's not how this works. You only know if the PSU is "working good" by using a very expensive load tester to look at the voltage regulation, ripple, and an analysis of the parts contained within. Knowing whether your PC works or not isn't enough, in the same way that a cardiologist evaluates if a heart is working through medical tests, not by just assuming that the heart is working well because the person is not dead.

And since most people do not have very expensive load testers or the knowledge to do any of that, you minimize your risk by buying PSUs from known platforms that have been tested publicly and with detailed rundowns of the parts. You won't get that from one of these ultra-cheapo Chinese firestarters.

Honestly, if you're running that PSU with a 7950 on Molex, I would never even leave the house without making sure the PC is turned off.

It's 1GB stock card it draws max 138W I think you're overexaggerating it a bit. The worst of the 6950 line still pulled less than 190W. He differently should replace his supply but all the "It's gonna burn your house down" stuff is overboard.

 

[kerberos_20]

lc power itself doesnt have bad psu, i have one myself, never failed, but its not recommended to run you psu at full load all time

 

[DSzymborski]

lc power itself doesnt have bad psu, i have one myself, never failed, but its not recommended to run you psu at full load all time

Again, that your PC didn't fail doesn't mean the power supply was good. Don't give advice that risks people having fires.

 

[DSzymborski]

I am using one molex only, second one is from my PSU, so it has one 6pin, it just doesn't have 2 6pin, but how is my computer working good so than? i have no problems, should i have more FPS if i would buy better psu than?

Because that's not how this works. You only know if the PSU is "working good" by using a very expensive load tester to look at the voltage regulation, ripple, and an analysis of the parts contained within. Knowing whether your PC works or not isn't enough, in the same way that a cardiologist evaluates if a heart is working through medical tests, not by just assuming that the heart is working well because the person is not dead.

And since most people do not have very expensive load testers or the knowledge to do any of that, you minimize your risk by buying PSUs from known platforms that have been tested publicly and with detailed rundowns of the parts. You won't get that from one of these ultra-cheapo Chinese firestarters.

Honestly, if you're running that PSU with a 7950 on Molex, I would never even leave the house without making sure the PC is turned off.

It's 1GB stock card it draws max 138W I think you're overexaggerating it a bit. The worst of the 6950 line still pulled less than 190W. He differently should replace his supply but all the "It's gonna burn your house down" stuff is overboard.

*Through Molex* changes things considerably compared to a crap power supply that at least has PCIE spaghetti thrown on.

He's also not running a Pentium, but a 130W TDP CPU. The PSU's rated +12V max is 300W. And it's extremely low quality in any case.

I rarely shout "fire hazard" and in fact have recommended PSUs like Corsair VS in very specific cases. This is a risky situation.

 

[kerberos_20]

lc power its german company..so u may never heard of it
i really doubt its low quality brand, tho his psu is from low end serie (35eur) annyway his psu is from 2008, which is too old to run it in full power

 

[DSzymborski]

lc power its german company..so u may never heard of it
i really doubt its low quality brand, tho his psu is from low end serie (35eur) annyway his psu is from 2008, which is too old to run it in full power

Yeah, I'm sure those low-end Great Wall-made PSUs with AsiaX and/or HEC capacitors were quality stuff. And, if I recall, they're one of the companies that have been caught in the past with a product that differed with the one sent to plugload for 80-plus testing (but I'd have to verify that as I'm relying on memory here).

 

[jankerson]

I am using one molex only, second one is from my PSU, so it has one 6pin, it just doesn't have 2 6pin, but how is my computer working good so than? i have no problems, should i have more FPS if i would buy better psu than?

2 molex to 1x 6pin PCIE isn't that bad to use on low to medium range cards, 1 molex to 1x 6pin PCIE is asking for trouble. Most people here have a issue with using them at all but in the right situations they are fine.

LC6420 V1.3 - Super Silent Series has a peak output of 360W and is not using very high-quality parts, it may work for you but the question is for how long. Output tends to degrade over time with all units but cheaper ones tend to be more dramatic. Your using around 270 W so a 450W of good quality would work but a 500W would be optimal and not leave you with the "How long is this thing going to last question".

Yes i'm using 2xmolex into 6pin + 6pin from my PSU

I hope your fire insurance is up to date and you keep a fire extinguisher right next to the PC....

 

[ko888]

The LC6420 V1.3 - Super Silent Series is based on an old passive PFC design and uses Huntkey as the OEM. It'll die when you try to draw its rated wattage.

 

[DSzymborski]

The LC6420 V1.3 - Super Silent Series is based on an old passive PFC design and uses Huntkey as the OEM. It'll die when you try to draw its rated wattage.

Oh lord, those are Huntkey? I thought that one was at least a Great Wall.

 

[ethanbajc]

Thank you all!

 

[ethanbajc]

Managed to buy Gygabyte B700H max 700W PSU, what do you think about that?

https://www.gigabyte.com/Power-Supply/B700H#kf

 

[ko888]

Managed to buy Gygabyte B700H max 700W PSU, what do you think about that?

https://www.gigabyte.com/Power-Supply/B700H#kf

That PSU uses the CWT GPK platform. It uses an older group regulated circuit design. It's definitely way better than your old LC6420 V1.3.