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Advice - PSU, Upgrades

post #1 of 6
Thread Starter 
Looking to upgrade my current PC upgrading only what i need to upgrade!

New bits:

Asus P8Z77-V PRO Z77 Socket 1155
Intel Core i7 3770K 3.5GHz Socket 1155 8MB
Corsair Vengeance Performance Memory Modules 16GB (2x8GB) DDR3 1600MHz
OCZ 240GB Vertex 3

Old bits:

Corsair HX520W
HD6950
X-Fi Fatal1ty (with front bit)
WDC 500Gb
1xDVD-RW

Cooling: DC Laing Pump, 2x120mm Vantec Stealths, 4x80mm Vantec Stealths

I very much so intend on overclocking the new CPU so I am curious to know if my PSU can actually handle the new stuff. I am also considering buying another 6950 to get a CrossFire on the go. Also possibly a Blu-ray drive but less likely.

I have used the eXtreme Power Supply calculator thing which technically says my PSU should be 'ok' but to be safe I would like to hear from you guys.

If it helps my PC currently runs:

Corsair HX520W
Q8200 @ 3.4ghz
4GB Corsair Dominator
HD6950
X-Fi Fatal1ty (with front bit)
2x150gb Raptors
1x WDC 500Gb
1xDVD-RW

Cooling: DC Laing Pump, 2x120mm Vantec Stealths, 4x80mm Vantec Stealths

If you need any more info let me know!

Also if the bits I plan to buy aren't optimal I am happy to hear suggestions.

Thanks
post #2 of 6

The HX520 is more than enough for your system with one 6950 in it, and it might even be enough if you added a 2nd 6950.  Although, I think that you'd have to leave the 6950s at stock and only overclock the 3770K to about 4.5 GHz at the most (this is just a guess based on my findings below).

 

Here's the power draw of the 6950s in Crossfire under full load:

 

http://www.guru3d.com/article/radeon-hd-6950-crossfirex-review/14

 

They found that their two 6950s under full load pulled 329W on their own (not counting the system).  The HX520 has a +12V capacity of 480W, so this would leave 151W for the rest of the system when the 6950s under full load.  According to this, the 3770K could pull about 156W by itself under full load if it's overclocked to about 4.9 GHz using 1.392V.  I mean, their system idled at 84W and then pulled 240W when under load, so the difference is 156W.  So to me, this means that if you only overclocked the 3770K to about 4.5 GHz using like maybe 1.35 - 1.36V (this is only a guess), then the HX520's +12V capacity of 480W should be enough if you were to have the 3770K and both 6950s under full load simultaneously.

 

The eXtreme Outer Vision PSU Calculator has the wrong stock voltage for the 3770K.  In order to get it to read exactly 156W with a 4.9 GHz 1.39V overclock, I had to change the stock voltage to 1.155V (from 1.25V).  With the stock voltage at 1.155V, an overclock of 4.5 GHz with 1.35V results in 135W which would be a 464W draw on the +12V with the 3770K and both 6950s under full load simultaneously.  Raising the voltage to 1.37V changed their calculation to 139W, and raising it to 1.38V resulted in 141W.  141W + 329W is 470W.  Again though, this is assuming a simultaneous full load between the 3770K and both of the 6950s.

 

Now, even if the HX520 ends up being insufficient after adding a 2nd 6950, then the PSU would safely and harmlessly turn off.  So if that were to be the case, then you'd just temporarily remove the 6950 and begin shopping for a new PSU.  ;)

 

So, I say that when you decide to add a 2nd 6950, try it out with the HX520.  It seems to me like it should have enough power if you leave the 6950s at stock and keep the 3770K to perhaps 4.5 GHz.  That way if you have a simultaneous full load between the 3770K and both of the 6950s, then the HX520 should still have enough power.

It's a computer!
(19 items)
 
  
CPUMotherboardGraphicsRAM
i5-2500K @ 4.5GHz (1.368-1.384V fixed voltage) ASUS P8P67 EVO B3 (UEFI ver. 1850) GTX 780 ASUS DirectCU II (1228 / 6300, 1.180V) G.SKILL Ripjaws X 8GB (2 x 4GB) 1866MHz, CL9 
Hard DriveHard DriveHard DriveOptical Drive
250 GB Samsung 840 EVO (C:\) 250 GB Samsung 840 EVO (D:\) 150 GB WD VelociRaptor Samsung SH-S243N 24x DVD Burner 
Optical DriveCoolingOSMonitor
Samsung SH-S203N 20X DVD Burner Thermaltake Frio Win 7 Home Premium x64 SP1 Retail AOC G2460PG (24" 1920 x 1080 144Hz G-SYNC) 
KeyboardPowerCaseMouse
Filco Majestouch 104-key Cherry MX Blues w/NKRO Corsair HX650 (Bronze, ordered on 12-12-2009) CM 690 Intellimouse Optical (1.1A) 1000Hz polling rate 
Mouse PadAudioAudio
Basic, but premium round X-Fi Titanium HD Klipsch ProMedia 2.1 (with 16 AWG Monster Cable... 
  hide details  
Reply
It's a computer!
(19 items)
 
  
CPUMotherboardGraphicsRAM
i5-2500K @ 4.5GHz (1.368-1.384V fixed voltage) ASUS P8P67 EVO B3 (UEFI ver. 1850) GTX 780 ASUS DirectCU II (1228 / 6300, 1.180V) G.SKILL Ripjaws X 8GB (2 x 4GB) 1866MHz, CL9 
Hard DriveHard DriveHard DriveOptical Drive
250 GB Samsung 840 EVO (C:\) 250 GB Samsung 840 EVO (D:\) 150 GB WD VelociRaptor Samsung SH-S243N 24x DVD Burner 
Optical DriveCoolingOSMonitor
Samsung SH-S203N 20X DVD Burner Thermaltake Frio Win 7 Home Premium x64 SP1 Retail AOC G2460PG (24" 1920 x 1080 144Hz G-SYNC) 
KeyboardPowerCaseMouse
Filco Majestouch 104-key Cherry MX Blues w/NKRO Corsair HX650 (Bronze, ordered on 12-12-2009) CM 690 Intellimouse Optical (1.1A) 1000Hz polling rate 
Mouse PadAudioAudio
Basic, but premium round X-Fi Titanium HD Klipsch ProMedia 2.1 (with 16 AWG Monster Cable... 
  hide details  
Reply
post #3 of 6
Thread Starter 
This is great news, save a few pounds biggrin.gif Thanks for your reply
post #4 of 6

You're welcome!

 

There might be even better news:  if the 3770K is overclocked to 4.5 GHz, then doesn't it really only need about 1.20V to 1.25V?  I mean, eXtreme Outer Vision's PSU Calculator shows 107W for 4.5 GHz using 1.20V, and 116W using 1.25V (at 4.5 GHz).

It's a computer!
(19 items)
 
  
CPUMotherboardGraphicsRAM
i5-2500K @ 4.5GHz (1.368-1.384V fixed voltage) ASUS P8P67 EVO B3 (UEFI ver. 1850) GTX 780 ASUS DirectCU II (1228 / 6300, 1.180V) G.SKILL Ripjaws X 8GB (2 x 4GB) 1866MHz, CL9 
Hard DriveHard DriveHard DriveOptical Drive
250 GB Samsung 840 EVO (C:\) 250 GB Samsung 840 EVO (D:\) 150 GB WD VelociRaptor Samsung SH-S243N 24x DVD Burner 
Optical DriveCoolingOSMonitor
Samsung SH-S203N 20X DVD Burner Thermaltake Frio Win 7 Home Premium x64 SP1 Retail AOC G2460PG (24" 1920 x 1080 144Hz G-SYNC) 
KeyboardPowerCaseMouse
Filco Majestouch 104-key Cherry MX Blues w/NKRO Corsair HX650 (Bronze, ordered on 12-12-2009) CM 690 Intellimouse Optical (1.1A) 1000Hz polling rate 
Mouse PadAudioAudio
Basic, but premium round X-Fi Titanium HD Klipsch ProMedia 2.1 (with 16 AWG Monster Cable... 
  hide details  
Reply
It's a computer!
(19 items)
 
  
CPUMotherboardGraphicsRAM
i5-2500K @ 4.5GHz (1.368-1.384V fixed voltage) ASUS P8P67 EVO B3 (UEFI ver. 1850) GTX 780 ASUS DirectCU II (1228 / 6300, 1.180V) G.SKILL Ripjaws X 8GB (2 x 4GB) 1866MHz, CL9 
Hard DriveHard DriveHard DriveOptical Drive
250 GB Samsung 840 EVO (C:\) 250 GB Samsung 840 EVO (D:\) 150 GB WD VelociRaptor Samsung SH-S243N 24x DVD Burner 
Optical DriveCoolingOSMonitor
Samsung SH-S203N 20X DVD Burner Thermaltake Frio Win 7 Home Premium x64 SP1 Retail AOC G2460PG (24" 1920 x 1080 144Hz G-SYNC) 
KeyboardPowerCaseMouse
Filco Majestouch 104-key Cherry MX Blues w/NKRO Corsair HX650 (Bronze, ordered on 12-12-2009) CM 690 Intellimouse Optical (1.1A) 1000Hz polling rate 
Mouse PadAudioAudio
Basic, but premium round X-Fi Titanium HD Klipsch ProMedia 2.1 (with 16 AWG Monster Cable... 
  hide details  
Reply
post #5 of 6
Thread Starter 
Initially only thought I'd spend a little bit of cash, but if you upgrade 1 thing you end up needing to buy everything else as well. Glad the PSU will be ok, 6950's are still sitting at £200 so maybe wont do that for a while. has anyone got the 3770k to 5ghz?
post #6 of 6
Quote:
Originally Posted by stetran View Post

Has anyone got the 3770k to 5ghz?

 

I don't know yet, but I haven't been paying attention.  The last time I started paying attention, I ended up upgrading. hehe  That's why I have a Sandy Bridge system now.  lol  smile.gif

It's a computer!
(19 items)
 
  
CPUMotherboardGraphicsRAM
i5-2500K @ 4.5GHz (1.368-1.384V fixed voltage) ASUS P8P67 EVO B3 (UEFI ver. 1850) GTX 780 ASUS DirectCU II (1228 / 6300, 1.180V) G.SKILL Ripjaws X 8GB (2 x 4GB) 1866MHz, CL9 
Hard DriveHard DriveHard DriveOptical Drive
250 GB Samsung 840 EVO (C:\) 250 GB Samsung 840 EVO (D:\) 150 GB WD VelociRaptor Samsung SH-S243N 24x DVD Burner 
Optical DriveCoolingOSMonitor
Samsung SH-S203N 20X DVD Burner Thermaltake Frio Win 7 Home Premium x64 SP1 Retail AOC G2460PG (24" 1920 x 1080 144Hz G-SYNC) 
KeyboardPowerCaseMouse
Filco Majestouch 104-key Cherry MX Blues w/NKRO Corsair HX650 (Bronze, ordered on 12-12-2009) CM 690 Intellimouse Optical (1.1A) 1000Hz polling rate 
Mouse PadAudioAudio
Basic, but premium round X-Fi Titanium HD Klipsch ProMedia 2.1 (with 16 AWG Monster Cable... 
  hide details  
Reply
It's a computer!
(19 items)
 
  
CPUMotherboardGraphicsRAM
i5-2500K @ 4.5GHz (1.368-1.384V fixed voltage) ASUS P8P67 EVO B3 (UEFI ver. 1850) GTX 780 ASUS DirectCU II (1228 / 6300, 1.180V) G.SKILL Ripjaws X 8GB (2 x 4GB) 1866MHz, CL9 
Hard DriveHard DriveHard DriveOptical Drive
250 GB Samsung 840 EVO (C:\) 250 GB Samsung 840 EVO (D:\) 150 GB WD VelociRaptor Samsung SH-S243N 24x DVD Burner 
Optical DriveCoolingOSMonitor
Samsung SH-S203N 20X DVD Burner Thermaltake Frio Win 7 Home Premium x64 SP1 Retail AOC G2460PG (24" 1920 x 1080 144Hz G-SYNC) 
KeyboardPowerCaseMouse
Filco Majestouch 104-key Cherry MX Blues w/NKRO Corsair HX650 (Bronze, ordered on 12-12-2009) CM 690 Intellimouse Optical (1.1A) 1000Hz polling rate 
Mouse PadAudioAudio
Basic, but premium round X-Fi Titanium HD Klipsch ProMedia 2.1 (with 16 AWG Monster Cable... 
  hide details  
Reply
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