bob16314
Welcome to the forums.
You should be good to go as long as you're not experiencing any boot, shutdown, freezing or gameplay (low FPS, black screen, studdering) problems that can be associated with an insufficient PSU.
An is a 215 watt card (~ 17.9 Amps @ +12V)..Of which it can get 75 watts (~ 6.25 Amps @ +12V) from the PCIe slot itself, leaving the remainder of 140 watts (~ 11.6 Amps @ +12V) to be supplied by the Supplemental Power Connectors (6+2-pin or 8-pin).
An 8-pin (or 6+2-pin) connector is for 150 watts (~ 12.5 Amps @ +12V) and is programmed into the card's VBIOS not to exceed that current draw as specified by the industry standard PCI-SIG specifications.
EVGA and other vendors can and often do exceed the minimum power requirements of their cards by adding extra 6-pin/8-pin connectors to promote overclocking/stability, for example a 225W card (75W from the PCIe slot and 150W from one 8-pin connector) might come with two 8-pin connectors (75W from the PCIe slot and 300W from two 8-pin connectors, or a combination of 6-pin/8-pin Supplemental Power Connectors, aka PEG Connectors) to feed the card extra wattage/amperage.
Amps (horsepower) on the +12V supply is the most critical factor..The wattage is calculated at +12 volts and can be converted using a .
Since your supplies 27A on 12V_2 which supplies over and above the additional ~ 11.6 Amps @ +12V of supplemental power for your GTX 1070 FTW, there should be no problemo.
However, +12V_2 on a two-rail PSU such as yours also normally supplies all the other components in your system and +12V_1 usually supplies only the motherboard and CPU power.
You can use to estimate your overall system wattage requirement.
Long story short = You're okay if you're not having problems and your are keeping up with the Jones's.
Now that you mention it I do feel I have a bit of a lower FPS (than I was expecting with this card) and occasionally a bit of a stutter.
This was the main reason for starting this thread. I run a racing sim "Assetto Corsa" the in_game benchmark I get a solid 63 FPS,
However if I race with the same number of cars, track and graphics settings (max) as the benchmark I am only getting 40- to 45 FPS. I have tried to lower the graphics settings and it does not seem to help much with the FPS.
The following are the specs for the PSU:
Power supply type: Silent Giant Series - Green Power Edition
ATX standardATX V2.3
Connectors:
20+4 pin mainboard1x 45 cm
4+4 pin mainboard 12V (EPS)1x 45 cm
PCI-Express:
1x PCI-Express 6 pin 45 cm
1x PCI-Express 6+2 pin 60 cm
SATA6 (3x 45 / 3x 60 cm)
PATA2 (1x 45 / 1x 60 cm)
Mark of conformityCE / TÜV
Fan140mm
PFC active
Dimension h x w x d87 x 150 x 160 mm
Weight (retail)=2,104 kg
Power rating max. combined= 650W
+3,3V =28A
+5V =30A
max. combined = 165W
+12V1 =25A
+12V2 =27A
max. combined =550W
Efficiency =up to 91,05%
Standby consumption = 0,3W - ErP 2013
Temperature control for case fan = yes
Security circuitry:
OVP = Over-Voltage Protection
OCP = Over-Current Protection
OPP = Over-Power Protection
OTP = Over-Temperature Protection
SCP = Short-Circuit Protection
UVP = Under-Voltage Protection
Multirange (110V/220V) no
Haswell compatible yes
Barcode 4260070122194
Manufacturer codeLC6650GP3 V2.3