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Cutting it too close?

post #1 of 5
Thread Starter 
I have an Antec Earthwatts 380D PSU, and there's a deal on these forums right now for a GTX 260 for cheap. I've been needing a medium-performance graphics card for awhile now and the 260 seems to be a perfect fit.... except for the power requirements....

Tom's Hardware says that the 260 draws 15.9 amps. Am I in the clear as far as overdrawing this PSU? My sig rig has everything else that's drawing power, but add a USB 3.0 card and an external HDD, plus obvious peripherals (Mouse, keyboard, etc.)
Heisenberg
(10 items)
 
Redemption
(18 items)
 
 
CPUGraphicsRAMHard Drive
Intel Core 2 Extreme @ 2.8GHz (upgrade) Intel GMA 950 2 x 2 DDR2 667MHz (upgrade) 120GB Mushkin ECO2 
Optical DriveOSMonitorPower
Replaced with 42 W/hr aux battery Mint 17.3 1280x800 Dell 65w Dell Adapter 
CaseOther
Latitude D630 Chassis Intel 7260-802.11ac 2x2 
CPUMotherboardGraphicsRAM
Not telling AsRock something Pixel Pusher 2 x 8 GB AMD Radeon RAM @ 1600mhz (All the VM's) 
Hard DriveHard DriveHard DriveOptical Drive
Crucial M4 128GB (8 second boot) Western Digital RE4 1TB Western Digital RE4 2TB Pioneer Blu-Ray Reader/Writer 
CoolingOSMonitorKeyboard
Cooler Master Hyper 212 Evo Windows 8.1 Pro x64 Dell U2713HM IBM Model M (CLICKY!!) 
PowerCaseMouseAudio
Antec HCG-900 NZXT Source 210 (it was cheap) Logitech G502 Schiit Modi 
AudioAudio
Sennheiser HD 598 M-Audio AV40's 
CPUMotherboardGraphicsRAM
Intel Core i5-4200U Microsoft BGA1168 Intel HD 4400 8 GB LPDDR3 Dual Channel @ 1600mhz 
Hard DriveOSMonitorKeyboard
SK Hynix 256GB SSD Windows 8.1 Professional 1920 x 1080p IPS Display Microsoft Touch Cover 2 
Power
48w PSU 
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Heisenberg
(10 items)
 
Redemption
(18 items)
 
 
CPUGraphicsRAMHard Drive
Intel Core 2 Extreme @ 2.8GHz (upgrade) Intel GMA 950 2 x 2 DDR2 667MHz (upgrade) 120GB Mushkin ECO2 
Optical DriveOSMonitorPower
Replaced with 42 W/hr aux battery Mint 17.3 1280x800 Dell 65w Dell Adapter 
CaseOther
Latitude D630 Chassis Intel 7260-802.11ac 2x2 
CPUMotherboardGraphicsRAM
Not telling AsRock something Pixel Pusher 2 x 8 GB AMD Radeon RAM @ 1600mhz (All the VM's) 
Hard DriveHard DriveHard DriveOptical Drive
Crucial M4 128GB (8 second boot) Western Digital RE4 1TB Western Digital RE4 2TB Pioneer Blu-Ray Reader/Writer 
CoolingOSMonitorKeyboard
Cooler Master Hyper 212 Evo Windows 8.1 Pro x64 Dell U2713HM IBM Model M (CLICKY!!) 
PowerCaseMouseAudio
Antec HCG-900 NZXT Source 210 (it was cheap) Logitech G502 Schiit Modi 
AudioAudio
Sennheiser HD 598 M-Audio AV40's 
CPUMotherboardGraphicsRAM
Intel Core i5-4200U Microsoft BGA1168 Intel HD 4400 8 GB LPDDR3 Dual Channel @ 1600mhz 
Hard DriveOSMonitorKeyboard
SK Hynix 256GB SSD Windows 8.1 Professional 1920 x 1080p IPS Display Microsoft Touch Cover 2 
Power
48w PSU 
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post #2 of 5
As u can see I have a 260 and my system original came with a 550w psu. It also was much more cut down then what it is now; different ram, mono, psu, case, heatsink/fan. I went overkill on my psu though so I didn't have to upgrade down the road so soon, I plan on dual gnu later and maybe wc. So I would say the 380w is really cutting it close. I believe the 260's actually recommend a 500w but I could be wrong. Also the rest of your system doesn't appear to require to much power. But I am no expert. There is a forum on psu's that I would refer to if I was u.
Jango (Main Rig)
(23 items)
 
Edward (HTPC)
(16 items)
 
CPUMotherboardGraphicsRAM
Intel Core i7-4790 MSI ATX LGA 1150 Z97 PC MATE mobo EVGA GeForce GTX 1060 SC GAMING 16GB 
Hard DriveHard DriveHard DriveHard Drive
OCZ Agility 4 (OS) 1TB Hitachi (Data & Apps) 1TB Hitachi (Movies & other Multimedia) 750GB 
Optical DriveCoolingCoolingCooling
DVD±RW / ASUS USB 2.0 8x Slim external DVD Burner Cooler Master Hyper T4 NZXT Sentry Mix COOLER MASTER SickleFlow 120mm x2 
OSMonitorMonitorMonitor
Windows 10 Pro 64bit ASUS VS247H-P 23.6"  ASUS VH236H 23"  HP 27" 2560x1440 
KeyboardPowerCaseMouse
Logitech Illuminated Keyboard Corsair Professional Series HX850W CM Storm Trooper Razer Tron 
Mouse PadOtherOther
XTRAC Pads Ripper XL Rosewill Red USB 2.0 7 Port Hub With Power Adapter Creative HS-1000 Fatal1ty Gaming Headset 
CPUMotherboardGraphicsRAM
AMD Phenom II X4 920 2.8GHz Socket AM2+ 125W Qu... ASRock A780GXE/128M AM2+/AM2 AMD 780G ATX ATI Radeon HD 4670 G.SKILL 4GB (2 x 2GB) 240-Pin DDR2 SDRAM DDR2 1... 
RAMHard DriveHard DriveCooling
G.SKILL 4GB (2 x 2GB) 240-Pin DDR2 SDRAM DDR2 1... Hitachi 1TB 7200 RPM SATAII 3.0Gb/s Samsung 250GB 7200 RPM Enermax ETS T-40 T.B. SILENCE 
OSMonitorPowerCase
Windows 8.1 Pro 64 bit 47" Sony TV RAIDMAX HYBRID 2 530W Custom Wood Table 
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Jango (Main Rig)
(23 items)
 
Edward (HTPC)
(16 items)
 
CPUMotherboardGraphicsRAM
Intel Core i7-4790 MSI ATX LGA 1150 Z97 PC MATE mobo EVGA GeForce GTX 1060 SC GAMING 16GB 
Hard DriveHard DriveHard DriveHard Drive
OCZ Agility 4 (OS) 1TB Hitachi (Data & Apps) 1TB Hitachi (Movies & other Multimedia) 750GB 
Optical DriveCoolingCoolingCooling
DVD±RW / ASUS USB 2.0 8x Slim external DVD Burner Cooler Master Hyper T4 NZXT Sentry Mix COOLER MASTER SickleFlow 120mm x2 
OSMonitorMonitorMonitor
Windows 10 Pro 64bit ASUS VS247H-P 23.6"  ASUS VH236H 23"  HP 27" 2560x1440 
KeyboardPowerCaseMouse
Logitech Illuminated Keyboard Corsair Professional Series HX850W CM Storm Trooper Razer Tron 
Mouse PadOtherOther
XTRAC Pads Ripper XL Rosewill Red USB 2.0 7 Port Hub With Power Adapter Creative HS-1000 Fatal1ty Gaming Headset 
CPUMotherboardGraphicsRAM
AMD Phenom II X4 920 2.8GHz Socket AM2+ 125W Qu... ASRock A780GXE/128M AM2+/AM2 AMD 780G ATX ATI Radeon HD 4670 G.SKILL 4GB (2 x 2GB) 240-Pin DDR2 SDRAM DDR2 1... 
RAMHard DriveHard DriveCooling
G.SKILL 4GB (2 x 2GB) 240-Pin DDR2 SDRAM DDR2 1... Hitachi 1TB 7200 RPM SATAII 3.0Gb/s Samsung 250GB 7200 RPM Enermax ETS T-40 T.B. SILENCE 
OSMonitorPowerCase
Windows 8.1 Pro 64 bit 47" Sony TV RAIDMAX HYBRID 2 530W Custom Wood Table 
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post #3 of 5
You're probably not using 80W with the rest of the system. Earthwatts Green 380D can do 380W fine so it'll be easily okay.


Note: below is for AC draw from the wall, which includes losses in the power supply
http://www.xbitlabs.com/articles/cpu...0_7.html#sect0
post #4 of 5
Thread Starter 
You make a good point, mikeaj. With my Pentium peaking at 67watts on max load, I really cannot see the combined total of all the other components drawing 110 watts.... Maybe I'll ask Phaedrus or read his PSU calculator page again, but I think I'll be ok....

Another consideration how how much the 12v rails can take. It has two 20amp 12v rails. Do the math, and that means that it can put out 480 watts of 12amp current. Obviously this won't work and would trigger the OCP because the total load exceeded 380.... But it does mean that I've got some decent 12volt headroom to play with.

Any other posters feel free to tear apart this logic if i goofed it up.
Heisenberg
(10 items)
 
Redemption
(18 items)
 
 
CPUGraphicsRAMHard Drive
Intel Core 2 Extreme @ 2.8GHz (upgrade) Intel GMA 950 2 x 2 DDR2 667MHz (upgrade) 120GB Mushkin ECO2 
Optical DriveOSMonitorPower
Replaced with 42 W/hr aux battery Mint 17.3 1280x800 Dell 65w Dell Adapter 
CaseOther
Latitude D630 Chassis Intel 7260-802.11ac 2x2 
CPUMotherboardGraphicsRAM
Not telling AsRock something Pixel Pusher 2 x 8 GB AMD Radeon RAM @ 1600mhz (All the VM's) 
Hard DriveHard DriveHard DriveOptical Drive
Crucial M4 128GB (8 second boot) Western Digital RE4 1TB Western Digital RE4 2TB Pioneer Blu-Ray Reader/Writer 
CoolingOSMonitorKeyboard
Cooler Master Hyper 212 Evo Windows 8.1 Pro x64 Dell U2713HM IBM Model M (CLICKY!!) 
PowerCaseMouseAudio
Antec HCG-900 NZXT Source 210 (it was cheap) Logitech G502 Schiit Modi 
AudioAudio
Sennheiser HD 598 M-Audio AV40's 
CPUMotherboardGraphicsRAM
Intel Core i5-4200U Microsoft BGA1168 Intel HD 4400 8 GB LPDDR3 Dual Channel @ 1600mhz 
Hard DriveOSMonitorKeyboard
SK Hynix 256GB SSD Windows 8.1 Professional 1920 x 1080p IPS Display Microsoft Touch Cover 2 
Power
48w PSU 
  hide details  
Reply
Heisenberg
(10 items)
 
Redemption
(18 items)
 
 
CPUGraphicsRAMHard Drive
Intel Core 2 Extreme @ 2.8GHz (upgrade) Intel GMA 950 2 x 2 DDR2 667MHz (upgrade) 120GB Mushkin ECO2 
Optical DriveOSMonitorPower
Replaced with 42 W/hr aux battery Mint 17.3 1280x800 Dell 65w Dell Adapter 
CaseOther
Latitude D630 Chassis Intel 7260-802.11ac 2x2 
CPUMotherboardGraphicsRAM
Not telling AsRock something Pixel Pusher 2 x 8 GB AMD Radeon RAM @ 1600mhz (All the VM's) 
Hard DriveHard DriveHard DriveOptical Drive
Crucial M4 128GB (8 second boot) Western Digital RE4 1TB Western Digital RE4 2TB Pioneer Blu-Ray Reader/Writer 
CoolingOSMonitorKeyboard
Cooler Master Hyper 212 Evo Windows 8.1 Pro x64 Dell U2713HM IBM Model M (CLICKY!!) 
PowerCaseMouseAudio
Antec HCG-900 NZXT Source 210 (it was cheap) Logitech G502 Schiit Modi 
AudioAudio
Sennheiser HD 598 M-Audio AV40's 
CPUMotherboardGraphicsRAM
Intel Core i5-4200U Microsoft BGA1168 Intel HD 4400 8 GB LPDDR3 Dual Channel @ 1600mhz 
Hard DriveOSMonitorKeyboard
SK Hynix 256GB SSD Windows 8.1 Professional 1920 x 1080p IPS Display Microsoft Touch Cover 2 
Power
48w PSU 
  hide details  
Reply
post #5 of 5
Lol better logic then mine
Jango (Main Rig)
(23 items)
 
Edward (HTPC)
(16 items)
 
CPUMotherboardGraphicsRAM
Intel Core i7-4790 MSI ATX LGA 1150 Z97 PC MATE mobo EVGA GeForce GTX 1060 SC GAMING 16GB 
Hard DriveHard DriveHard DriveHard Drive
OCZ Agility 4 (OS) 1TB Hitachi (Data & Apps) 1TB Hitachi (Movies & other Multimedia) 750GB 
Optical DriveCoolingCoolingCooling
DVD±RW / ASUS USB 2.0 8x Slim external DVD Burner Cooler Master Hyper T4 NZXT Sentry Mix COOLER MASTER SickleFlow 120mm x2 
OSMonitorMonitorMonitor
Windows 10 Pro 64bit ASUS VS247H-P 23.6"  ASUS VH236H 23"  HP 27" 2560x1440 
KeyboardPowerCaseMouse
Logitech Illuminated Keyboard Corsair Professional Series HX850W CM Storm Trooper Razer Tron 
Mouse PadOtherOther
XTRAC Pads Ripper XL Rosewill Red USB 2.0 7 Port Hub With Power Adapter Creative HS-1000 Fatal1ty Gaming Headset 
CPUMotherboardGraphicsRAM
AMD Phenom II X4 920 2.8GHz Socket AM2+ 125W Qu... ASRock A780GXE/128M AM2+/AM2 AMD 780G ATX ATI Radeon HD 4670 G.SKILL 4GB (2 x 2GB) 240-Pin DDR2 SDRAM DDR2 1... 
RAMHard DriveHard DriveCooling
G.SKILL 4GB (2 x 2GB) 240-Pin DDR2 SDRAM DDR2 1... Hitachi 1TB 7200 RPM SATAII 3.0Gb/s Samsung 250GB 7200 RPM Enermax ETS T-40 T.B. SILENCE 
OSMonitorPowerCase
Windows 8.1 Pro 64 bit 47" Sony TV RAIDMAX HYBRID 2 530W Custom Wood Table 
  hide details  
Reply
Jango (Main Rig)
(23 items)
 
Edward (HTPC)
(16 items)
 
CPUMotherboardGraphicsRAM
Intel Core i7-4790 MSI ATX LGA 1150 Z97 PC MATE mobo EVGA GeForce GTX 1060 SC GAMING 16GB 
Hard DriveHard DriveHard DriveHard Drive
OCZ Agility 4 (OS) 1TB Hitachi (Data & Apps) 1TB Hitachi (Movies & other Multimedia) 750GB 
Optical DriveCoolingCoolingCooling
DVD±RW / ASUS USB 2.0 8x Slim external DVD Burner Cooler Master Hyper T4 NZXT Sentry Mix COOLER MASTER SickleFlow 120mm x2 
OSMonitorMonitorMonitor
Windows 10 Pro 64bit ASUS VS247H-P 23.6"  ASUS VH236H 23"  HP 27" 2560x1440 
KeyboardPowerCaseMouse
Logitech Illuminated Keyboard Corsair Professional Series HX850W CM Storm Trooper Razer Tron 
Mouse PadOtherOther
XTRAC Pads Ripper XL Rosewill Red USB 2.0 7 Port Hub With Power Adapter Creative HS-1000 Fatal1ty Gaming Headset 
CPUMotherboardGraphicsRAM
AMD Phenom II X4 920 2.8GHz Socket AM2+ 125W Qu... ASRock A780GXE/128M AM2+/AM2 AMD 780G ATX ATI Radeon HD 4670 G.SKILL 4GB (2 x 2GB) 240-Pin DDR2 SDRAM DDR2 1... 
RAMHard DriveHard DriveCooling
G.SKILL 4GB (2 x 2GB) 240-Pin DDR2 SDRAM DDR2 1... Hitachi 1TB 7200 RPM SATAII 3.0Gb/s Samsung 250GB 7200 RPM Enermax ETS T-40 T.B. SILENCE 
OSMonitorPowerCase
Windows 8.1 Pro 64 bit 47" Sony TV RAIDMAX HYBRID 2 530W Custom Wood Table 
  hide details  
Reply
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