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HX850 or X850

post #1 of 37
Thread Starter 
Going to build a SB system, and wonder which PSU should I get. I only know Corsair has longer warranty period compare to Seasonic, beside this are there any different between these 2 PSUs?
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post #2 of 37
Which graphics card(s) will you get?
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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 
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post #3 of 37
Thread Starter 
Two 6950, thinking to unlock it 6970.
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post #4 of 37
Quote:
Originally Posted by HGooper View Post
Two 6950, thinking to unlock it 6970.
Oh, then the SeaSonic X-650 would be absolutely perfect. Sure, it's very overkill on quality, but it sounds like you can afford it since you're considering the HX850 and X-850.
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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 
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KeyboardPowerCaseMouse
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post #5 of 37
Thread Starter 
Quote:
Originally Posted by TwoCables View Post
Oh, then the SeaSonic X-650 would be absolutely perfect. Sure, it's very overkill on quality, but it sounds like you can afford it since you're considering the HX850 and X-850.
I buy 850W because I want to use it for quite long time, not thinking to change PSU every time when I upgrade my system. And I don't have to worry the power issue when I try to overclock harder lol.
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Crucial M4 128GB Windows 8 PRo 64 bit S27A950D CM Quick Fire Rapid Red 
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post #6 of 37
Quote:
Originally Posted by HGooper View Post
I buy 850W because I want to use it for quite long time, not thinking to change PSU every time when I upgrade my system. And I don't have to worry the power issue when I try to overclock harder lol.
The only time you'd have to worry about it is if you upgrade to some graphics cards that are much more powerful. Otherwise, something like the X-650 will last you basically forever (in the practical sense). Plus, the quality of the X-Series (specifically the 650W and 750W versions) is so high that you'll never, ever, ever, ever have to worry about overclocking on it. You could take your overclock to the extreme and it wouldn't really even flinch.

But if you must have a little bit of room, then go with the X-750. I mean, if you have too small of a load on a PSU (specifically less than 50%), then it cannot be as efficient as its Certification would lead you to believe. The load would already be less than 50% on the X-750, but at least it's not as small as it would be on the X-850.

Here's more information about that:

http://www.overclock.net/power-suppl...fficiency.html

http://www.overclock.net/power-suppl...load-myth.html

This is why the X-650 would be absolutely perfect. And if you upgrade to a much beefier graphics card solution and find that you need like a 1000W power supply, then you can just sell the X-650.
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... 
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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... 
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post #7 of 37
Quote:
Originally Posted by TwoCables View Post
Oh, then the SeaSonic X-650 would be absolutely perfect. Sure, it's very overkill on quality, but it sounds like you can afford it since you're considering the HX850 and X-850.
650W for HD 6950/70 Crossfire?
post #8 of 37
Quote:
Originally Posted by pangeltveit View Post
650W for HD 6950/70 Crossfire?
Absolutely!

http://www.amd.com/us/products/deskt...verview.aspx#3

It says 500W is recommended to power a system with a single 6950, and even though they don't show the recommendation for a system with two 6950s in it, I can say this: every single time I have seen 500W recommended on their site, 600W was recommended for a system with two of the cards in Crossfire.

For example:

http://www.amd.com/us/products/deskt...verview.aspx#3


Then there's this:

http://www.amd.com/us/products/deskt...verview.aspx#3

It recommends a 550W to power a system with a single 6970 in it. So given the extremely high quality of the X-650, I'm 100% confident that it'll be perfectly fine.
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... 
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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 
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Basic, but premium round X-Fi Titanium HD Klipsch ProMedia 2.1 (with 16 AWG Monster Cable... 
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post #9 of 37
Thread Starter 
Quote:
Originally Posted by TwoCables View Post
The only time you'd have to worry about it is if you upgrade to some graphics cards that are much more powerful. Otherwise, something like the X-650 will last you basically forever (in the practical sense). Plus, the quality of the X-Series (specifically the 650W and 750W versions) is so high that you'll never, ever, ever, ever have to worry about overclocking on it. You could take your overclock to the extreme and it wouldn't really even flinch.

But if you must have a little bit of room, then go with the X-750. I mean, if you have too small of a load on a PSU (specifically less than 50%), then it cannot be as efficient as its Certification would lead you to believe. The load would already be less than 50% on the X-750, but at least it's not as small as it would be on the X-850.

Here's more information about that:

http://www.overclock.net/power-suppl...fficiency.html

http://www.overclock.net/power-suppl...load-myth.html

This is why the X-650 would be absolutely perfect. And if you upgrade to a much beefier graphics card solution and find that you need like a 1000W power supply, then you can just sell the X-650.
I don't think 650w will suit my need, considering I've to use for quite long time. 750w is a min for me, but I'm aiming for 850w. So please focus on my topic, thanks.
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My System
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CPUMotherboardGraphicsRAM
Intel i5-3570K GA-Z77X-UP5 TH 2 X Sapphire HD7970 G.Skill Sniper 8GB 
Hard DriveOSMonitorKeyboard
Crucial M4 128GB Windows 8 PRo 64 bit S27A950D CM Quick Fire Rapid Red 
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Corsair AX850 Silverstone TJ07 Zowie AM Artisan Hayate 
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post #10 of 37
Quote:
Originally Posted by HGooper View Post
I don't think 650w will suit my need, considering I've to use for quite long time. 750w is a min for me, but I'm aiming for 850w. So please focus on my topic, thanks.
I am focusing on it, but you're not trusting me. Actually, you're not appreciating what I'm saying.

I'm sorry, but it looks like you only came here to have someone tell you that you should do what you want to do (I know that you are just asking a simple question, but I like it when someone shows me that I can spend less money). It also looks like if anyone agrees with me, then you'll just tell them to go away too.

Seriously: what are the chances that you'll make that big of an upgrade? To power your system with even two 6970s in it, you will only need a quality 650, maybe 700W at the most. So think about what you can buy with the money you'll save by buying the X-650 instead of the HX850 or X-850.

Don't let the wattage rating of these PSU's fool you. When AMD recommends 650W for two 6970's in Crossfire, they're including PSUs that have a "Peak" rating of 650W. But the power supplies we are looking at have a "continuous" rating of 650W.

But y'know what, I apologize for being interested in enabling you to spend less money. So here's my reply to the original question:

The X-850 is a superior unit in quality, has better efficiency (when the load isn't less than 50% on it like I mentioned before), and it's fully modular. But the HX850 is fine too. However, both are technically a waste of money unless you are absolutely 100% sure that you'll replace the two 6970s with something that requires much more power. Or, if you decide to add a third 6970. But you'd have to be absolutely 100% sure that you'll do it.
Edited by TwoCables - 1/10/11 at 3:28am
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... 
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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... 
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