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Thortech > 
Item#: N82E16817144005

Thortech Thunderbolt 850W TTB850G ATX 12V v2.3 / EPS 12V v2.91 SLI Ready CrossFire Ready 80 PLUS GOLD Certified Modular Active PFC Power Supply

  • ATX 12V v2.3 / EPS 12V v2.91
  • 100 - 240 V
  • 80 PLUS GOLD Certified
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The Thortech Thunderbolt Series high efficiency gaming performance power supplies are 80 Plus Gold and NVIDIA SLI certified, as well as compliant with the latest Intel and AMD CPUs. Featuring over 90% efficiency, modular cable design, low ESR 105°C solid state capacitors and temperature controlled 135mm fan, the Thunderbolt Series offers a compelling combination of performance, quality and aesthetics which is tailored to meet the needs of the most power hungry enthusiasts.

  • newegg 80 PLUS Gold Certified The 80 PLUS Gold certified power supply provides high power efficiency of at least 87% at any load between 20% and 100%, saving your money on your electrical bill, reducing heat in your computer's system and prolonging its life.
  • newegg 850W Continuous Power with Quad +12V Rails The Thunderbolt Series TTB850G is capable of delivering 850W continuous output at 50°C ambient, with quad +12V rail design providing up to 70.83A to provide unbeatably stable performance and ample +12V power to the system wattage requirement.
  • newegg Modular Cable Management The modular cable design allows use of only the cables you need resulting in improved internal airflow and reduced chassis clutter.
  • newegg 135mm Silent Ball Bearing Fan The whisper-quiet 135mm ball bearing fan provides superior cooling performance while smart fan control circuit ensures minimal noise.
  • newegg SLI & CrossFireX Ready Coming with 4x 6+2 Pin modular PCI-E connectors, the Thunderbolt Series TTB850G allows you to build an SLI or CrossFireX gaming system with two high-end graphics cards.

Learn more about the Thortech TTB850G


Thunderbolt 850W


ATX 12V v2.3 / EPS 12V v2.91
Maximum Power
1 x 135 mm Ball Bearing Fan
Main Connector
+12V Rails
PCI-Express Connector
4 x 6+2-Pin
SATA Power Connector
SLI Ready
CrossFire Ready
> 90%
80 PLUS GOLD Certified
Over Voltage Protection
Input Voltage
100 - 240 V
Input Frequency Range
50/60 Hz
Input Current
+3.3V@25A, +5V@25A, +12V1@30A, +12V2@30A, +12V3@30A, +12V4@30A, -12V@0.8A, +5VSB@6.0A
>120,000 Hours
CUL, TÜV, CB, CE, FCC, C’tick, Gost-R, PSE
6.3" x 5.9" x 3.4"


1 x Main connector (20+4Pin)
1 x 4+4 Pin EPS 12V CPU
1 x 8 Pin EPS 12V CPU
6 x Peripheral
12 x SATA
1 x Floppy
4 x PCI-E 2.0
Efficiency performance of up to > 90% with 80Plus Gold certification

Quad +12V rail design providing up to 70.83A (850W)

Modulized Cable Management

Comply with all the latest Intel and AMD CPU

Designed to sustain at 50°C ambient with full wattage output

Interleaved PFC circuit helps to provide perfect PF value > 0.99

135mm Ball Bearing Fan with smart fan control circuit to provide better system airflow

Support NVIDIA SLI & ATI Crossfire multiple graphic cards platform

Low ESR 105°C solid state capacitors

Multi-Protection as OCP/ OVP/ OPP/ UVP/ SCP/ OTP

Manufacturer Warranty

5 years limited
5 years limited

Quick Info


  • Limited Warranty period (parts): 5 years
  • Limited Warranty period (labor): 5 years

Customer Reviews of the Thortech TTB850G

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  • Nathan G.
  • 12/19/2012 8:16:29 AM
  • Tech Level: Somewhat High
  • Ownership: more than 1 year
  • Verified Owner

1 out of 5 eggsCustomer Support Nightmare

Pros: Had this product for over under a hear and a half. No problems and ran quietly up until that point.

Cons: I looked through all the of items before purchasing and checked reviews, specs, and company information. At the time this unit was most cost effective and had fairly good review. Unit failed suddenly, I looked up the company website to look at how to get a repair considering they note a 5 year warranty on their product. The website no longer exists, no contact information, nothing. The link on Newegg Contact Manufacturer page is a dead link.

Other Thoughts: Go with a unit you can have repaired in your country.

Did you find this review helpful? Yes No

  • Christopher M.
  • 5/25/2012 1:24:51 PM
  • Tech Level: Somewhat High
  • Ownership: 1 month to 1 year
  • Verified Owner

5 out of 5 eggsNo Issues

Pros: Handles two GeForce GTX 560 Ti running SLI, with no issues. Very quiet.

Cons: None.

Other Thoughts: Has ran for the last 5 months with no issues. Cable stiffness/management wasn't an issue with my case.

Case: Cooler Master Storm Scout
Mobo: ASUS Sabertooth 990FX
CPU: AMD FX-6100 Zambezi OC'd 3.81GHz (after market heat sink)
RAM: GSKILL Ripjaws X Series 16GB (2 x 8GB)
GPU: 2 x ASUS GeForce GTX 560 Ti 1GB 256-bit in SLI

Did you find this review helpful? Yes No

  • Thomas E.
  • 1/14/2012 7:48:20 PM
  • Tech Level: Somewhat High
  • Ownership: 1 week to 1 month
  • Verified Owner

4 out of 5 eggsThick cables

Pros: Simple, feels solid. Its what you expect out of a powersupply. Lots of interchangeable cables. completely ready for SLI/Crossfire.

Cons: The cables are thick and rigid, makes them durable, but cable management is nearly impossible. If it wasn't for this I would give a 5-egg.

Did you find this review helpful? Yes No

  • Lee S.
  • 12/30/2011 7:11:47 PM
  • Tech Level: High
  • Ownership: 1 day to 1 week

5 out of 5 eggsExcellent Power Supply

Pros: Ease of installation, total number of connectors it can provide, professional packaging, overall value for cost, low noise level.

Cons: None that I have discovered.

Other Thoughts: This is your unit if you are looking for a Gold certified power supply with a ton of connections.

Did you find this review helpful? Yes No

  • David S.
  • 10/4/2011 11:21:35 PM
  • Tech Level: High
  • Ownership: 1 week to 1 month
  • Verified Owner

5 out of 5 eggsGood buy

Pros: Good PSU
Comes with nice bags and some ties for your wires
Plenty of wires to fill any gaming rig, thick wires that are built to last

Cons: The wires are a bit stiff, so you need to work them a little.

Did you find this review helpful? Yes No

  • Chris K.
  • 6/15/2011 5:04:34 PM
  • Tech Level: Average
  • Ownership: 1 week to 1 month
  • Verified Owner

5 out of 5 eggsGreat PSU

Pros: Handles 3 AMD 6950's like a champ. Great efficiency rating = saved money. Great tech support.

Cons: Nothing comes to mind.

Did you find this review helpful? Yes No

  • John B.
  • 5/3/2011 6:49:38 AM
  • Tech Level: Somewhat High
  • Ownership: 1 day to 1 week
  • Verified Owner

1 out of 5 eggswouldn't power motherboard

Pros: none, sent it back defective

Cons: Power supply fan started turning before turned on, system fans kept turning on and stopping after a few seconds. Replaced with a locally purchased 850w plugged in exactly the same way, and the system worked-problem confirmed. Wasted expedited pick and second day shipping cause of it.

sent back , putting brand on my do not buy list.

Other Thoughts: I did not see any user reviews, till today.
plenty of professional reviewer reviews.

new egg customer service is model for all others to follow.

1 out of 2 people found this review helpful. Did you? Yes No

  • Michael T.
  • 3/16/2011 7:09:07 PM
  • Tech Level: Somewhat High
  • Ownership: 1 day to 1 week
  • Verified Owner

5 out of 5 eggs

Pros: This is a great PS it started up with no problems.

Cons: Not sure if much of a con but the wires are a little stiff.

Did you find this review helpful? Yes No

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Item#: N82E16817144005
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