Overclock.net › Forums › Components › Power Supplies › Trifire 7970's...1050w Enough?
New Posts  All Forums:Forum Nav:

Trifire 7970's...1050w Enough? - Page 3

post #21 of 65
Trifire on a Z68 board without an NF200 chip?
Correct me if I am wrong, but that limits PCI-e bandwith to 8x/8x/4x [Corrected: 8x/4x/4x], right?

Coupled with crappy early drivers, it wont be that much of an improvement.
How about you wait till' the drivers improve and scaling is fixed up a bit, and see if it still is a problem. A 7970 on an 4x slot would be a shame.
If you want to go over normal two-way crossfire get yourself a mobo with an NF200 chip or go to X79.
Edited by pangolinman - 2/5/12 at 11:53am
post #22 of 65
I would like to know the reason behind the comments " borderline" or "just enough", please provide proof.



Here's a review on Quad 7970: http://www.hardwareheaven.com/reviews/1376/pg1/sapphire-radeon-7970-quad-crossfire-first-look-performance-quad-graphics-cards.html

Trifire 7970 - 664watts
Quad - 892watts

Assuming those were taking from the wall and the power efficiency around 85%, the actual power drawn by the gpu's would be, for Trifire (664 * 0.85) 564watts and for Quad (892 * .85) 758watts. Adding a further 150watts for the rest of the system including cpu load the total power drawn for trifire 7970 would be around 700watts and for quad around 900w. Obviously this is without overvolting the GPU's, however a 1050+ should and will be enough for Tri, it will leave you around 300w or so headroom for overclocking.
Edited by munaim1 - 2/5/12 at 11:44am
it looks alive
(17 items)
 
Sandy Transformed
(69 photos)
 
CPUMotherboardGraphicsRAM
i5 2500K [5ghz 1.44v 24/7] Asus Maximus IV Extreme SLI GTX 460 @ 920/1840/4100 [1.11v] 4GB Dominator GT @ 2133mhz CL8 [1.65v] 
Hard DriveHard DriveCoolingOS
Intel X25-M G2 80GB 3x Samsung F3 500GB RAID 0 EK Supreme HF Full Copper Windows 7 Ultimate 64bit 
MonitorPowerCaseAudio
LG42SL9500 42" 1080p [Surround Soon] XFX XXX Edition 650w Xigmatec Elysium JVC HA-RX700 [foam mod] 
  hide details  
Reply
it looks alive
(17 items)
 
Sandy Transformed
(69 photos)
 
CPUMotherboardGraphicsRAM
i5 2500K [5ghz 1.44v 24/7] Asus Maximus IV Extreme SLI GTX 460 @ 920/1840/4100 [1.11v] 4GB Dominator GT @ 2133mhz CL8 [1.65v] 
Hard DriveHard DriveCoolingOS
Intel X25-M G2 80GB 3x Samsung F3 500GB RAID 0 EK Supreme HF Full Copper Windows 7 Ultimate 64bit 
MonitorPowerCaseAudio
LG42SL9500 42" 1080p [Surround Soon] XFX XXX Edition 650w Xigmatec Elysium JVC HA-RX700 [foam mod] 
  hide details  
Reply
post #23 of 65
Thread Starter 
Quote:
Originally Posted by pangolinman View Post

Trifire on a Z68 board without an NF200 chip?
Correct me if I am wrong, but that limits PCI-e bandwith to 8x/8x/4x, right?
Coupled with crappy early drivers, it wont be that much of an improvement.
How about you wait till' the drivers improve and scaling is fixed up a bit, and see if it still is a problem. A 7970 on an 4x slot would be a shame.
If you want to go over normal two-way crossfire get yourself a mobo with an NF200 chip or go to X79.

No, this is for my planned build. LGA 2011 (supports pcie 3.0 thumb.gif)
Ivysaur
(13 items)
 
   
CPUMotherboardGraphicsRAM
3770k ASUS Maximus V Formula Z77 2 Asus GTX 670 DCII Watercooled in SLI 16GB G.Skill 1866 9-9-9-24 
Hard DriveOptical DriveCoolingOS
1 TB WD Caviar Black Samsung Blu-Ray combo drive XSPC Raystorm, Two UT60 360mm Rads Windows 7 64 bit 
MonitorPowerCaseAudio
Catleap 2560x1440p 1050w Seasonic Caselabs M8 Creative Recon3D 
Other
120gb Corsair Force GT 
CPUMotherboardGraphicsRAM
Intel i7-2600k @ 4.62GHz Asrock Professional 3 Gen 3 Z68 2 Sapphire Radeon 7970's 16GB G.Skill Ripjaws X 1600 MHz 
Hard DriveOptical DriveCoolingOS
1 TB WD Caviar Black Samsung Blu-ray Combo Drive XSPC RX240 Watercooling kit. Windows 7 64 bit 
MonitorPowerCaseMouse Pad
3 Hannspree 23" 1080p in Eyefinity Seasonic 1050w Coolermaster HAF-X Steelseries Qck 
Other
Corsiar Force GT 3 SSD 
  hide details  
Reply
Ivysaur
(13 items)
 
   
CPUMotherboardGraphicsRAM
3770k ASUS Maximus V Formula Z77 2 Asus GTX 670 DCII Watercooled in SLI 16GB G.Skill 1866 9-9-9-24 
Hard DriveOptical DriveCoolingOS
1 TB WD Caviar Black Samsung Blu-Ray combo drive XSPC Raystorm, Two UT60 360mm Rads Windows 7 64 bit 
MonitorPowerCaseAudio
Catleap 2560x1440p 1050w Seasonic Caselabs M8 Creative Recon3D 
Other
120gb Corsair Force GT 
CPUMotherboardGraphicsRAM
Intel i7-2600k @ 4.62GHz Asrock Professional 3 Gen 3 Z68 2 Sapphire Radeon 7970's 16GB G.Skill Ripjaws X 1600 MHz 
Hard DriveOptical DriveCoolingOS
1 TB WD Caviar Black Samsung Blu-ray Combo Drive XSPC RX240 Watercooling kit. Windows 7 64 bit 
MonitorPowerCaseMouse Pad
3 Hannspree 23" 1080p in Eyefinity Seasonic 1050w Coolermaster HAF-X Steelseries Qck 
Other
Corsiar Force GT 3 SSD 
  hide details  
Reply
post #24 of 65
^^Oh nvm then carry on.
The 3930
(26 items)
 
Junior's 3930
(22 items)
 
DATA/HTPC
(20 items)
 
  hide details  
Reply
The 3930
(26 items)
 
Junior's 3930
(22 items)
 
DATA/HTPC
(20 items)
 
  hide details  
Reply
post #25 of 65
Quote:
Originally Posted by pangolinman View Post

Trifire on a Z68 board without an NF200 chip?
Correct me if I am wrong, but that limits PCI-e bandwith to 8x/8x/4x, right?
Coupled with crappy early drivers, it wont be that much of an improvement.
How about you wait till' the drivers improve and scaling is fixed up a bit, and see if it still is a problem. A 7970 on an 4x slot would be a shame.
If you want to go over normal two-way crossfire get yourself a mobo with an NF200 chip or go to X79.
Actually it's 8x-4x-4x wink.gif
Good point.
Quote:
Originally Posted by SammichThyme View Post

Congrats on succefully confusing me thumb.gif. I just listed the PSU on eBay, and I've got some time. If I still have it, I'll try it out. The general consensus is a AX1200, not that I think you're wrong, I'd just like to be safe.
Nothing to be confused about, act smart..
Edited by Original Sin - 2/5/12 at 11:56am
post #26 of 65
Thread Starter 
Quote:
Originally Posted by munaim1 View Post

I would like to know the reason behind the comments " borderline" or "just enough", please provide proof.
Here's a review on Quad 7970: http://www.hardwareheaven.com/reviews/1376/pg1/sapphire-radeon-7970-quad-crossfire-first-look-performance-quad-graphics-cards.html
Trifire 7970 - 664watts
Quad - 892watts
Assuming those were taking from the wall and the power efficiency around 85%, the actual power drawn by the gpu's would be, for Trifire (664 * 0.85) 564watts and for Quad (892 * .85) 758watts. Adding a further 150watts for the rest of the system including cpu load the total power drawn for trifire 7970 would be around 700watts and for quad around 900w. Obviously this is without overvolting the GPU's, however a 1050+ should and will be enough for Tri, it will leave you around 300w or so for overclocking.

Yes, but I will be overvolting and overclocking and my whole system will be running of this PSU, not just the GPU's, I'm going to give these guys their own RX360 rad just to help with that. The stock fans are nonsense.
Ivysaur
(13 items)
 
   
CPUMotherboardGraphicsRAM
3770k ASUS Maximus V Formula Z77 2 Asus GTX 670 DCII Watercooled in SLI 16GB G.Skill 1866 9-9-9-24 
Hard DriveOptical DriveCoolingOS
1 TB WD Caviar Black Samsung Blu-Ray combo drive XSPC Raystorm, Two UT60 360mm Rads Windows 7 64 bit 
MonitorPowerCaseAudio
Catleap 2560x1440p 1050w Seasonic Caselabs M8 Creative Recon3D 
Other
120gb Corsair Force GT 
CPUMotherboardGraphicsRAM
Intel i7-2600k @ 4.62GHz Asrock Professional 3 Gen 3 Z68 2 Sapphire Radeon 7970's 16GB G.Skill Ripjaws X 1600 MHz 
Hard DriveOptical DriveCoolingOS
1 TB WD Caviar Black Samsung Blu-ray Combo Drive XSPC RX240 Watercooling kit. Windows 7 64 bit 
MonitorPowerCaseMouse Pad
3 Hannspree 23" 1080p in Eyefinity Seasonic 1050w Coolermaster HAF-X Steelseries Qck 
Other
Corsiar Force GT 3 SSD 
  hide details  
Reply
Ivysaur
(13 items)
 
   
CPUMotherboardGraphicsRAM
3770k ASUS Maximus V Formula Z77 2 Asus GTX 670 DCII Watercooled in SLI 16GB G.Skill 1866 9-9-9-24 
Hard DriveOptical DriveCoolingOS
1 TB WD Caviar Black Samsung Blu-Ray combo drive XSPC Raystorm, Two UT60 360mm Rads Windows 7 64 bit 
MonitorPowerCaseAudio
Catleap 2560x1440p 1050w Seasonic Caselabs M8 Creative Recon3D 
Other
120gb Corsair Force GT 
CPUMotherboardGraphicsRAM
Intel i7-2600k @ 4.62GHz Asrock Professional 3 Gen 3 Z68 2 Sapphire Radeon 7970's 16GB G.Skill Ripjaws X 1600 MHz 
Hard DriveOptical DriveCoolingOS
1 TB WD Caviar Black Samsung Blu-ray Combo Drive XSPC RX240 Watercooling kit. Windows 7 64 bit 
MonitorPowerCaseMouse Pad
3 Hannspree 23" 1080p in Eyefinity Seasonic 1050w Coolermaster HAF-X Steelseries Qck 
Other
Corsiar Force GT 3 SSD 
  hide details  
Reply
post #27 of 65
id suggest a decent 1200w psu like others have said....

Try searching for Phaedrus' PSU calculator or PM him and see what he says, his reply will be better than any other comment here.
Current rig
(11 items)
 
  
Reply
Current rig
(11 items)
 
  
Reply
post #28 of 65
Quote:
Originally Posted by SammichThyme View Post

Yes, but I will be overvolting and overclocking and my whole system will be running of this PSU, not just the GPU's, I'm going to give these guys their own RX360 rad just to help with that. The stock fans are nonsense.

And at the end of the day, i'd guess you'd be pushing the system with only a 100w~ (or less) buffer....so if you're comfortable with that, then by all means, stick with the 1050w. It will handle it well.

I prefer covering my bases, not to mention, i have no desire to be pushing a PSU within 100w of its limits for 24/7 usage....so i am definitely with you in asking if 1050w would be sufficient. The answer is, of course, yes. Is it ideal? In my opinion, no...if you can spend $2-2.5K total on a system, spend the extra $50-100 on a quality PSU and go a slight notch just above what is sufficient and have peace of mind. thumb.gif
Apotheosis
(27 items)
 
  
CPUMotherboardGraphicsRAM
i7 5960X @ 4.6 Ghz (1.32v) ASUS X99-Deluxe 2x Nvidia Titan Xp SLI 32GB Crucial DDR4 2666 (4x8GB) 
Hard DriveHard DriveCoolingCooling
2x Samsung 850 Pro 256GB SSD (OS) 4x Crucial M4 256GB SSD 14x Corsair SP120 Quiet Edition 4x EK-RAM Monarch Module (Black) 
CoolingCoolingCoolingCooling
EK-XTOP w/ Dual D5 Pumps, EK-X3 250 Res, EK-D5 ... 2x Alphacool NexXxoS UT60 480mm Rads (1x top mo... 2x Alphacool NexXxos UT60 240mm Rads (1x front ... PrimoChill Rigid Acrylic tubing (White), Advanc... 
CoolingCoolingOSMonitor
2x EK-FC Titan X Pascal Nickel GPU Blocks w/ EK... 2x EK-RAM Monarch X4 Nickel/Acetal CSQ RAM Bloc... Windows 10 Pro, 64-bit 1x Acer Predator X34 @ 3440x1440p 34" IPS + 100... 
KeyboardPowerCaseMouse
Logitech G810 Orion Spectrum EVGA SuperNova P2 1600W Platinum CaseLabs SMA8 (Gunmetal Exterior/Black Interior... Logitech G502 Proteus Core 
Mouse PadAudioAudioAudio
Logitech G440 Audioengine HD6 w/ S8 Subwoofer Campfire Audio Vega IEMs Schiit Magni 2 Uber Amp 
AudioOtherOther
Schiit Modi 2 Uber DAC NZXT Sentry Mesh Fan Controller NZXT HUE RGB LED Controller 
  hide details  
Reply
Apotheosis
(27 items)
 
  
CPUMotherboardGraphicsRAM
i7 5960X @ 4.6 Ghz (1.32v) ASUS X99-Deluxe 2x Nvidia Titan Xp SLI 32GB Crucial DDR4 2666 (4x8GB) 
Hard DriveHard DriveCoolingCooling
2x Samsung 850 Pro 256GB SSD (OS) 4x Crucial M4 256GB SSD 14x Corsair SP120 Quiet Edition 4x EK-RAM Monarch Module (Black) 
CoolingCoolingCoolingCooling
EK-XTOP w/ Dual D5 Pumps, EK-X3 250 Res, EK-D5 ... 2x Alphacool NexXxoS UT60 480mm Rads (1x top mo... 2x Alphacool NexXxos UT60 240mm Rads (1x front ... PrimoChill Rigid Acrylic tubing (White), Advanc... 
CoolingCoolingOSMonitor
2x EK-FC Titan X Pascal Nickel GPU Blocks w/ EK... 2x EK-RAM Monarch X4 Nickel/Acetal CSQ RAM Bloc... Windows 10 Pro, 64-bit 1x Acer Predator X34 @ 3440x1440p 34" IPS + 100... 
KeyboardPowerCaseMouse
Logitech G810 Orion Spectrum EVGA SuperNova P2 1600W Platinum CaseLabs SMA8 (Gunmetal Exterior/Black Interior... Logitech G502 Proteus Core 
Mouse PadAudioAudioAudio
Logitech G440 Audioengine HD6 w/ S8 Subwoofer Campfire Audio Vega IEMs Schiit Magni 2 Uber Amp 
AudioOtherOther
Schiit Modi 2 Uber DAC NZXT Sentry Mesh Fan Controller NZXT HUE RGB LED Controller 
  hide details  
Reply
post #29 of 65
Quote:
Originally Posted by munaim1 View Post

I would like to know the reason behind the comments " borderline" or "just enough", please provide proof.
Here's a review on Quad 7970: http://www.hardwareheaven.com/reviews/1376/pg1/sapphire-radeon-7970-quad-crossfire-first-look-performance-quad-graphics-cards.html
Trifire 7970 - 664watts
Quad - 892watts
Assuming those were taking from the wall and the power efficiency around 85%, the actual power drawn by the gpu's would be, for Trifire (664 * 0.85) 564watts and for Quad (892 * .85) 758watts. Adding a further 150watts for the rest of the system including cpu load the total power drawn for trifire 7970 would be around 700watts and for quad around 900w. Obviously this is without overvolting the GPU's, however a 1050+ should and will be enough for Tri, it will leave you around 300w or so headroom for overclocking.

They say nothing about if they disabled or had Power Tune on. 6970's tests have shown that Powertune 20% on a single 6970 can be as much as 60w. That could be as much 180w in OP's case.

Also in test like this they run clean test rigs, almost no fans, 1 ssd, no Pumps no nothing. as people above have said adding all of this can quickly add another 50w on your system or even more depending on your system (a single Pump is often 20w alone.

So lets say we take the 664w in the review and add 180w for PT 20% and 50w for additional HW = 894w, then overvolt the gpu's with often adds another 30w on each card = 984w. Sure they where running LGA2011, but 2011 @ stock (they say nothing about clocks on their cpu) and 2600k with overclock is about the same.
Edited by Eggy88 - 2/5/12 at 1:05pm
post #30 of 65
DO NOT use 2 PSU's <--- VERY important advise there
DESKTOP
(16 items)
 
  
CPUMotherboardGraphicsRAM
i5 2500K @4.8ghz 1.39v MSI P67A-G45 MSI Twin Frozr III 6950 2gb Patriot 2x2gb 1333mhz 
Hard DriveHard DriveOptical DriveCooling
250gb Western Digital Caviar Blue Patriot Torqx 2 32GB SSD Sony DVD/RW Drive (CPU) Stock 
OSMonitorKeyboardPower
Windows 7 64-bit Acer P216HV 21.5in + x2 Acer A221HQV Microsoft Sidewinder x6 730W Raidmax 
CaseAudio
NZXT Gamma Logitech 5.1 X-530 
  hide details  
Reply
DESKTOP
(16 items)
 
  
CPUMotherboardGraphicsRAM
i5 2500K @4.8ghz 1.39v MSI P67A-G45 MSI Twin Frozr III 6950 2gb Patriot 2x2gb 1333mhz 
Hard DriveHard DriveOptical DriveCooling
250gb Western Digital Caviar Blue Patriot Torqx 2 32GB SSD Sony DVD/RW Drive (CPU) Stock 
OSMonitorKeyboardPower
Windows 7 64-bit Acer P216HV 21.5in + x2 Acer A221HQV Microsoft Sidewinder x6 730W Raidmax 
CaseAudio
NZXT Gamma Logitech 5.1 X-530 
  hide details  
Reply
New Posts  All Forums:Forum Nav:
  Return Home
  Back to Forum: Power Supplies
Overclock.net › Forums › Components › Power Supplies › Trifire 7970's...1050w Enough?