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OCZ ZS 750w and crossfire 7950?

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post #1 of 12

10/11/12 at 4:51pm

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rck1984
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Location: The Netherlands
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Hi folks,

I am considering to buy a 2nd Sapphire 7950 and run them crossfire in my sig rig.
Though i am wondering about one thing and i hope you guys can help me out on this.

- I am wondering if my current PSU would be sufficient enough to feed the two 7950 of enough juice? even with average overclocked GPU/CPU?

PSU:

OCZ ZS 750
80 Plus Bronze

Current system contains:

i5 2500k @ 4800Mhz - 1.375v.
Asus P8P67 Pro.
2x 4gb Corsair Vengeance memory (stock).
Corsair H100 + 2 Gentle Typhoons.
1x Sapphire 7950 OC edition.
2x 7200 rpm HDD.
1x Crucial 64gb SSD.
1x Bitfenix Caselight
2x Bitfenix LED fans.
DVD-Drive, keyboard, mouse.
Scythe fancontroller.

Thanks!

CPU	Motherboard	Graphics	RAM
Intel i5 2500k @ 4.8Ghz	Asus P8P67 Pro	2x Sapphire 7950 OC Dual-X @ 1100/1450 in CFX	12GB Corsair Vengeance 1600Mhz
Hard Drive	Hard Drive	Hard Drive	Hard Drive
Crucial M4 SSD 64GB OS Drive	Western Digital SATA 650GB	Western Digital SATA 650GB	Western Digital SATA 1TB
Cooling	OS	Monitor	Keyboard
Corsair H100 / 2x GT-15	Windows 7 Ultimate x64	Crossover 27Q LED IPS 2560x1440	Razer Blackwidow Stealth
Power	Case	Mouse
OCZ ZS 750W	Corsair Graphite 600T SE	Razer Naga
View all

hide details

CPU	Motherboard	Graphics	RAM
Intel i5 2500k @ 4.8Ghz	Asus P8P67 Pro	2x Sapphire 7950 OC Dual-X @ 1100/1450 in CFX	12GB Corsair Vengeance 1600Mhz
Hard Drive	Hard Drive	Hard Drive	Hard Drive
Crucial M4 SSD 64GB OS Drive	Western Digital SATA 650GB	Western Digital SATA 650GB	Western Digital SATA 1TB
Cooling	OS	Monitor	Keyboard
Corsair H100 / 2x GT-15	Windows 7 Ultimate x64	Crossover 27Q LED IPS 2560x1440	Razer Blackwidow Stealth
Power	Case	Mouse
OCZ ZS 750W	Corsair Graphite 600T SE	Razer Naga
View all

hide details

post #2 of 12

10/11/12 at 4:58pm

Gunderman456
Love this Hobby!

Joined: Oct 2008
Posts: 3,289
Rep: 332 (Unique: 293)
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Yes, it would be!

CPU	Motherboard	Graphics	RAM
Intel Core i5-3570K	ASRock Z77E-ITX mITX	Sapphire HD 5970 OC	G.SKILL Ripjaws 2X4GB DDR3-1600
Hard Drive	Hard Drive	Optical Drive	Cooling
Crucial SSD 128GB mSATA SATA III 6GB	Seagate Barracuda 7200.12 1TB SATAII 32MB 7200RPM	LG DVD R/W SATA with LightScribe	Corsair Cooling Hydro Series H100
OS	Monitor	Keyboard	Power
Win 7 Professional x64bit	Samsung SynchMaster 24" Widescreen TFT-LCD	Logitech G15	Corsair AX850 Gold Fully Modular
Case	Mouse	Mouse Pad	Audio
BitFenix Prodigy Mini-ATX Black	Microsoft Sidewinder X5	Redmond Mouse Pad	Cambridge Soundworks 5.1
View all

CPU	Motherboard	Graphics	RAM
Intel i5 750 @4.0GHz - 1.325V	Gigabyte P55 UD3R	Galaxy 8800 GT OC	G. Skills Ripjaws 2x2GB 1600MHz
Hard Drive	Optical Drive	Cooling	OS
Seagate Barracuda 7200.12 500GB SATAII 32MB 720...	LG DVD R/W SATA	Corsair Cooling Hydro Series H50	Win 7 Professional x64bit
Monitor	Keyboard	Power	Case
Samsung 22" Widescreen TFT-LCD	Logitech Deluxe 250	Cooler Master Silent Pro 1000W	Cooler Master Cosmos 1000
Mouse
Logitech MX 518
View all

CPU	Motherboard	Graphics	RAM
Intel Core 2 Quad 6600	Motherboard: XFX 780i SLI	Galaxy 8800 GT OC	OCZ Reaper HPC SLI DDR2 1066MHz 2GB Kit
Hard Drive	Optical Drive	Cooling	OS
Western Digital Caviar 500GB SATAII 7200RPM	Samsung Super Writer Master	Thermaltake Max Orb	Win Vista 32bit
Monitor	Keyboard	Power	Case
LG 22" Widescreen TFT-LCD	Logitech Deluxe 250	Cooler Master Real Power Pro 750W	Antec Mid Tower
Mouse
Microsoft Comfort 1000
View all

hide details

CPU	Motherboard	Graphics	RAM
Intel Core i5-3570K	ASRock Z77E-ITX mITX	Sapphire HD 5970 OC	G.SKILL Ripjaws 2X4GB DDR3-1600
Hard Drive	Hard Drive	Optical Drive	Cooling
Crucial SSD 128GB mSATA SATA III 6GB	Seagate Barracuda 7200.12 1TB SATAII 32MB 7200RPM	LG DVD R/W SATA with LightScribe	Corsair Cooling Hydro Series H100
OS	Monitor	Keyboard	Power
Win 7 Professional x64bit	Samsung SynchMaster 24" Widescreen TFT-LCD	Logitech G15	Corsair AX850 Gold Fully Modular
Case	Mouse	Mouse Pad	Audio
BitFenix Prodigy Mini-ATX Black	Microsoft Sidewinder X5	Redmond Mouse Pad	Cambridge Soundworks 5.1
View all

CPU	Motherboard	Graphics	RAM
Intel i5 750 @4.0GHz - 1.325V	Gigabyte P55 UD3R	Galaxy 8800 GT OC	G. Skills Ripjaws 2x2GB 1600MHz
Hard Drive	Optical Drive	Cooling	OS
Seagate Barracuda 7200.12 500GB SATAII 32MB 720...	LG DVD R/W SATA	Corsair Cooling Hydro Series H50	Win 7 Professional x64bit
Monitor	Keyboard	Power	Case
Samsung 22" Widescreen TFT-LCD	Logitech Deluxe 250	Cooler Master Silent Pro 1000W	Cooler Master Cosmos 1000
Mouse
Logitech MX 518
View all

CPU	Motherboard	Graphics	RAM
Intel Core 2 Quad 6600	Motherboard: XFX 780i SLI	Galaxy 8800 GT OC	OCZ Reaper HPC SLI DDR2 1066MHz 2GB Kit
Hard Drive	Optical Drive	Cooling	OS
Western Digital Caviar 500GB SATAII 7200RPM	Samsung Super Writer Master	Thermaltake Max Orb	Win Vista 32bit
Monitor	Keyboard	Power	Case
LG 22" Widescreen TFT-LCD	Logitech Deluxe 250	Cooler Master Real Power Pro 750W	Antec Mid Tower
Mouse
Microsoft Comfort 1000
View all

hide details

post #3 of 12

10/11/12 at 5:16pm

Thread Starter

rck1984
Overclocker

Joined: Mar 2010
Location: The Netherlands
Posts: 535
Rep: 21 (Unique: 15)
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Quote:

Originally Posted by Gunderman456

Yes, it would be!

Thanks for the quick response.

I always read mixed opinions on crossfire and psu's. I just want to be sure my psu can handle the two 7950's.. At this moment i cant afford it to buy a new psu as well as a 2nd 7950. Besides i have never been good with this kind of calculations

CPU	Motherboard	Graphics	RAM
Intel i5 2500k @ 4.8Ghz	Asus P8P67 Pro	2x Sapphire 7950 OC Dual-X @ 1100/1450 in CFX	12GB Corsair Vengeance 1600Mhz
Hard Drive	Hard Drive	Hard Drive	Hard Drive
Crucial M4 SSD 64GB OS Drive	Western Digital SATA 650GB	Western Digital SATA 650GB	Western Digital SATA 1TB
Cooling	OS	Monitor	Keyboard
Corsair H100 / 2x GT-15	Windows 7 Ultimate x64	Crossover 27Q LED IPS 2560x1440	Razer Blackwidow Stealth
Power	Case	Mouse
OCZ ZS 750W	Corsair Graphite 600T SE	Razer Naga
View all

hide details

CPU	Motherboard	Graphics	RAM
Intel i5 2500k @ 4.8Ghz	Asus P8P67 Pro	2x Sapphire 7950 OC Dual-X @ 1100/1450 in CFX	12GB Corsair Vengeance 1600Mhz
Hard Drive	Hard Drive	Hard Drive	Hard Drive
Crucial M4 SSD 64GB OS Drive	Western Digital SATA 650GB	Western Digital SATA 650GB	Western Digital SATA 1TB
Cooling	OS	Monitor	Keyboard
Corsair H100 / 2x GT-15	Windows 7 Ultimate x64	Crossover 27Q LED IPS 2560x1440	Razer Blackwidow Stealth
Power	Case	Mouse
OCZ ZS 750W	Corsair Graphite 600T SE	Razer Naga
View all

hide details

post #4 of 12

10/11/12 at 6:02pm

Thread Starter

rck1984
Overclocker

Joined: Mar 2010
Location: The Netherlands
Posts: 535
Rep: 21 (Unique: 15)
Select All Posts By This User

Anyone else with a different opinion?

CPU	Motherboard	Graphics	RAM
Intel i5 2500k @ 4.8Ghz	Asus P8P67 Pro	2x Sapphire 7950 OC Dual-X @ 1100/1450 in CFX	12GB Corsair Vengeance 1600Mhz
Hard Drive	Hard Drive	Hard Drive	Hard Drive
Crucial M4 SSD 64GB OS Drive	Western Digital SATA 650GB	Western Digital SATA 650GB	Western Digital SATA 1TB
Cooling	OS	Monitor	Keyboard
Corsair H100 / 2x GT-15	Windows 7 Ultimate x64	Crossover 27Q LED IPS 2560x1440	Razer Blackwidow Stealth
Power	Case	Mouse
OCZ ZS 750W	Corsair Graphite 600T SE	Razer Naga
View all

hide details

CPU	Motherboard	Graphics	RAM
Intel i5 2500k @ 4.8Ghz	Asus P8P67 Pro	2x Sapphire 7950 OC Dual-X @ 1100/1450 in CFX	12GB Corsair Vengeance 1600Mhz
Hard Drive	Hard Drive	Hard Drive	Hard Drive
Crucial M4 SSD 64GB OS Drive	Western Digital SATA 650GB	Western Digital SATA 650GB	Western Digital SATA 1TB
Cooling	OS	Monitor	Keyboard
Corsair H100 / 2x GT-15	Windows 7 Ultimate x64	Crossover 27Q LED IPS 2560x1440	Razer Blackwidow Stealth
Power	Case	Mouse
OCZ ZS 750W	Corsair Graphite 600T SE	Razer Naga
View all

hide details

post #5 of 12

10/11/12 at 6:54pm

mikeaj
sometimes right

Joined: Nov 2010
Posts: 1,707
Rep: 363 (Unique: 254)
Select All Posts By This User

No different opinion from me. Don't worry about the overclocks either. OCZ ZS is solid enough.

post #6 of 12

10/11/12 at 11:45pm

Pentium-David

Joined: Sep 2010
Posts: 1,156
Rep: 51 (Unique: 38)
Trader Rating: 6
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You're fine. You can CF too

CPU	Motherboard	Graphics	RAM
Core i5 2500K @ 4.4GHz	Asus Sabertooth P67	HIS IceQ Radeon HD 7950 3GB	16GB G.Skill Ares @ 1600MHz
Hard Drive	Cooling	OS	Monitor
500GB Seagate + 1TB Samsung	Corsair H80	Windows 7 Ultimate 64	Samsung 23" 1920x1080
Power	Case
Thortech Thunderbolt 650W	Antec 200
View all

hide details

CPU	Motherboard	Graphics	RAM
Core i5 2500K @ 4.4GHz	Asus Sabertooth P67	HIS IceQ Radeon HD 7950 3GB	16GB G.Skill Ares @ 1600MHz
Hard Drive	Cooling	OS	Monitor
500GB Seagate + 1TB Samsung	Corsair H80	Windows 7 Ultimate 64	Samsung 23" 1920x1080
Power	Case
Thortech Thunderbolt 650W	Antec 200
View all

hide details

post #7 of 12

10/12/12 at 10:19am

Thread Starter

rck1984
Overclocker

Joined: Mar 2010
Location: The Netherlands
Posts: 535
Rep: 21 (Unique: 15)
Select All Posts By This User

Thanks for the answer so far, I'd like some more opinions though. There is so many different thoughts on this.
Anyone else?

CPU	Motherboard	Graphics	RAM
Intel i5 2500k @ 4.8Ghz	Asus P8P67 Pro	2x Sapphire 7950 OC Dual-X @ 1100/1450 in CFX	12GB Corsair Vengeance 1600Mhz
Hard Drive	Hard Drive	Hard Drive	Hard Drive
Crucial M4 SSD 64GB OS Drive	Western Digital SATA 650GB	Western Digital SATA 650GB	Western Digital SATA 1TB
Cooling	OS	Monitor	Keyboard
Corsair H100 / 2x GT-15	Windows 7 Ultimate x64	Crossover 27Q LED IPS 2560x1440	Razer Blackwidow Stealth
Power	Case	Mouse
OCZ ZS 750W	Corsair Graphite 600T SE	Razer Naga
View all

hide details

CPU	Motherboard	Graphics	RAM
Intel i5 2500k @ 4.8Ghz	Asus P8P67 Pro	2x Sapphire 7950 OC Dual-X @ 1100/1450 in CFX	12GB Corsair Vengeance 1600Mhz
Hard Drive	Hard Drive	Hard Drive	Hard Drive
Crucial M4 SSD 64GB OS Drive	Western Digital SATA 650GB	Western Digital SATA 650GB	Western Digital SATA 1TB
Cooling	OS	Monitor	Keyboard
Corsair H100 / 2x GT-15	Windows 7 Ultimate x64	Crossover 27Q LED IPS 2560x1440	Razer Blackwidow Stealth
Power	Case	Mouse
OCZ ZS 750W	Corsair Graphite 600T SE	Razer Naga
View all

hide details

post #8 of 12

10/12/12 at 10:35am

Pentium-David

Joined: Sep 2010
Posts: 1,156
Rep: 51 (Unique: 38)
Trader Rating: 6
Select All Posts By This User

Quote:

Originally Posted by rck1984

Thanks for the answer so far, I'd like some more opinions though. There is so many different thoughts on this.
Anyone else?

Don't over-think it man

Just do it, you'll be just fine.

CPU	Motherboard	Graphics	RAM
Core i5 2500K @ 4.4GHz	Asus Sabertooth P67	HIS IceQ Radeon HD 7950 3GB	16GB G.Skill Ares @ 1600MHz
Hard Drive	Cooling	OS	Monitor
500GB Seagate + 1TB Samsung	Corsair H80	Windows 7 Ultimate 64	Samsung 23" 1920x1080
Power	Case
Thortech Thunderbolt 650W	Antec 200
View all

hide details

CPU	Motherboard	Graphics	RAM
Core i5 2500K @ 4.4GHz	Asus Sabertooth P67	HIS IceQ Radeon HD 7950 3GB	16GB G.Skill Ares @ 1600MHz
Hard Drive	Cooling	OS	Monitor
500GB Seagate + 1TB Samsung	Corsair H80	Windows 7 Ultimate 64	Samsung 23" 1920x1080
Power	Case
Thortech Thunderbolt 650W	Antec 200
View all

hide details

post #9 of 12

10/13/12 at 1:05pm

Thread Starter

rck1984
Overclocker

Joined: Mar 2010
Location: The Netherlands
Posts: 535
Rep: 21 (Unique: 15)
Select All Posts By This User

Ordered a 2nd Sapphire 7950 today, should be delivered on Monday.
Looking forward trying crossfire for first time

Thanks for the answers guys! Appreciated

CPU	Motherboard	Graphics	RAM
Intel i5 2500k @ 4.8Ghz	Asus P8P67 Pro	2x Sapphire 7950 OC Dual-X @ 1100/1450 in CFX	12GB Corsair Vengeance 1600Mhz
Hard Drive	Hard Drive	Hard Drive	Hard Drive
Crucial M4 SSD 64GB OS Drive	Western Digital SATA 650GB	Western Digital SATA 650GB	Western Digital SATA 1TB
Cooling	OS	Monitor	Keyboard
Corsair H100 / 2x GT-15	Windows 7 Ultimate x64	Crossover 27Q LED IPS 2560x1440	Razer Blackwidow Stealth
Power	Case	Mouse
OCZ ZS 750W	Corsair Graphite 600T SE	Razer Naga
View all

hide details

CPU	Motherboard	Graphics	RAM
Intel i5 2500k @ 4.8Ghz	Asus P8P67 Pro	2x Sapphire 7950 OC Dual-X @ 1100/1450 in CFX	12GB Corsair Vengeance 1600Mhz
Hard Drive	Hard Drive	Hard Drive	Hard Drive
Crucial M4 SSD 64GB OS Drive	Western Digital SATA 650GB	Western Digital SATA 650GB	Western Digital SATA 1TB
Cooling	OS	Monitor	Keyboard
Corsair H100 / 2x GT-15	Windows 7 Ultimate x64	Crossover 27Q LED IPS 2560x1440	Razer Blackwidow Stealth
Power	Case	Mouse
OCZ ZS 750W	Corsair Graphite 600T SE	Razer Naga
View all

hide details

post #10 of 12

10/14/12 at 6:07am

batman900

Joined: Sep 2012
Location: Texas
Posts: 259
Rep: 11 (Unique: 11)
Select All Posts By This User

Install with confidence, I have a 600w OCZ with a lot going on in my case and it still has power to spare.

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