Updated March, 2011

Q: Which graphics cards is GT3 compatible with?
A: GT3 V1.5 supports double slot graphics cards with lengths, including the power connectors, up to 10.1 inches.
A: GT3 supports graphics cards with two or less, six pin PCI-Express power connectors.

Video cards supported include:
- Nvidia Geforce GTX 570 HD Series Cards - GTR Tested EVGA's GTX 570 HD
(NOTE: The GTX 570 video card must be an "HD" model, as the non-HD model card exceed's 10.1" in length)
- Nvidia GeForce GTX 470 Series Cards - GTR Tested EVGA's GTX 470
- ATI Radeon HD 6870 Series and lower(be sure to get one that is 10.1", or shorter. Some are 10.5" in length)
- ATI Radeon HD 5850 Series and lower(be sure to get one that is 9.5"in length or less). GTR Tested Visiontek's Radeon HD 5850
*GTR recommends video cards that draw air in from the front of the video card, exiting out the rear. See Image

Q: Will GTR take international orders?
A: Yes, we will ship Internationally. We charge actual shipping rates, using United States Postal Service. If you would like to place an international order, provide us with your physical address, phone number, your preferred payment method - Paypal or Google Checkout and we will email you an invoice to process the order. Once the invoice is paid, we will process the shipment within 24 hours and send you the tracking number to the email address you provided.

Q: Does GT3 support full size ATX motherboards?
A: Yes, GT3 is the *only* small form factor PC that supports full size ATX motherboards.

Q: Which ATX motherboards does GT3 Support?
A: GT3 supports ATX motherboards with PCI-Express x16 connector in position number 6 or position number 7.

Q: How do I determine position #6 or #7?
A: Connector 7 will be about 1/2" from the I/O panel, connector 6 will be about 1.5" from the I/O panel. See Image. Additionally, if you would like us to confirm compatibility of a motherboard you are considering, contact us at This e-mail address is being protected from spambots. You need JavaScript enabled to view it . Include the motherboard model number and we will promptly provide you with an answer on compatibility.
*GTR Recommends motherboards with solid capacitors.

Q: What CPU Heatsink/Fans work with GT3?
A: Heatsink/Fans provided with the CPU, are ideal for GT3. Alternatively, thermal solutions need to be less than 80mm in height.

Q: What memory works with GT3?
A: GT3 accommodates memory sizes up to and including 1.7” in height. This includes most memory available in the market, today. Memories modules with protruding heatsinks are not recommended.

Q: Which backpacks and/or carrying cases works with GT3?
A: Many 20" backpacks and carrying cases work with GT3. Just be sure the capacity is adequate for GT3's dimensions, 12.5" x 4.5" x 15.4". If you would like help selecting a backpack, feel free to contact us at This e-mail address is being protected from spambots. You need JavaScript enabled to view it .

Q: Is GT3's power supply adequate for the GT3 system I plan to build.
A: Yes

Q: Is GT3's Power Supply(PSU) 350 or 370 Watts?
A: GT3's PSU lable is incorrect. The output rating was mistakenly measured at 35C(95F) instead of room temperature, 25C(78 F). GT3's PSU is rated 370W at 25C.

Q: I was told I need a jigawatt power supply and GT3's is 370 Watts?
A: See GTR's Technical Whitepapers for hard data on actual power consumption and GT3's Power Supply output.