HD 4870 PSU

[qwen234]

thanks guys
thanks for all ur time and effort

 

[serged999]

Need Help! I'm in a similar position but with just 50 more watts. I'm pretty sure I will be ok, but wanted to see what everyone else here thought. I just bought a Sapphire 4870 and need to know if I have enough juice for it. Here are my specs:

MOBO : Asus p45 pro
CPU: 8200 Quad Core OC to 3.1 right now
Ram: 2x2 = 4 gig 1066Mhz
Video Card: on its way, ati 4870
Arctic Cooling for my processor
POWER SUPPLY: ATX 550 Watt Ultra X2

stats of PS:
+5V=30A =
+3.3V=25A =160W

+12V=17A =
+12V=18A =408W

-12V=.8A =
+5 VSB=2.5 A =22W =550 Watts

What do you think? Can I run a 4870? I hope so because it will be arrving sooN! If so, any room to OC? All help is appreciated.

 

[wh3resmycar]

from the ati forums, ive read that some 4800s are getting messed up on a multi-12v rail PSU.

and for those who only have 1 pci-e cable from his PSU, a molex-to-pcie converter should be included in a 4870 bundle (i got one)

 

[serged999]

ohhh, really? hmmmm, well thats not that good of news...

 

[Nonpoint]

I was wondering if my psu can handle a 4870 also. I will be upgrading from a 8600gts.

Cooler Master RS-550-ACLY
+12V1@18A,+12V2@20A,+12V3@10A, Peak

+12V1@12A,+12V2@12A,+12V3@6A, Continuity

Current System Spec's

Motherboard Chipset: nVIDIA nForce 650i Ultra
CPU Type: DualCore Intel Core 2 Duo E6850, 3000 MHz (9 x 333) Stock
System Memory: 2048 MB (DDR2-800 DDR2 SDRAM) g.skill @1.85v
Video Adapter: NVIDIA GeForce 8600 GTS (256 MB)
Disk Drive : Seagate (320 GB, 7200 RPM, SATA-II) x2
Disk Drive : Seagate (500 GB, 7200 RPM, SATA-II)

 

[Nonpoint]

Bump

 

[geofelt]

Bump

A 4870 requires two pci-e connectors,
The simple rule is: If the psu has two pci-e connectors, it should have enough power to give them each the 75 watts that the spec requires.
If you need a pci-e adapter, or if the quality of the psu is suspect then be cautious.

 

[meodowla]

I think "CoolerMaster Silent Pro 600" would be best for you..

 

[Nonpoint]

Im sorry, what I was stating is the psu in my last post is my current psu, and I was wondering if it was up to the job of handling a 4870 with my system spec. Sorry for the misunderstanding.

A 4870 requires two pci-e connectors,
The simple rule is: If the psu has two pci-e connectors, it should have enough power to give them each the 75 watts that the spec requires.
If you need a pci-e adapter, or if the quality of the psu is suspect then be cautious.

I wasn't worried about the wattage, but more so the amps of the 12v rails.

 

[fearofblackhat]

A 4870 requires two pci-e connectors,
The simple rule is: If the psu has two pci-e connectors, it should have enough power to give them each the 75 watts that the spec requires.

hey all, I have a related question...

Just bought a Corsair 750TX (750W) PSU

Trying to connect to two HD 4870's in Crossfire

As stated above the cards each have (two) 6 pin PCI-E connectors, my PSU has (four) PCI-E 6+2 cables.

What the heck is the "+2" for? Can I safely connect the four PCI-E 6 pin cables and leave all the +2's hanging?

 

[ausch30]

Some cards use 8 pin connectors so that's what the other 2 pins are for. Yes it would be fine to just leave the 2 extra pins hanging there.

 

[geofelt]

A 4870 requires two pci-e connectors,
The simple rule is: If the psu has two pci-e connectors, it should have enough power to give them each the 75 watts that the spec requires.

hey all, I have a related question...

Just bought a Corsair 750TX (750W) PSU

Trying to connect to two HD 4870's in Crossfire

As stated above the cards each have (two) 6 pin PCI-E connectors, my PSU has (four) PCI-E 6+2 cables.

What the heck is the "+2" for? Can I safely connect the four PCI-E 6 pin cables and leave all the +2's hanging?

Not to worry. The +2 is an extra 2 pins to accomodate vga cards that require 8pin connectors. Just leave the two pins disconnected of you only need 6.

 

[unrealed99]

I bought a HD 4870 512mb graphics card 2 days ago and when I plug it in my computer and turn it on it starts up for half a second and then shuts off! I cant get it to work.

My PSU is a 650w Win power ATX-650, I know it isnt a good PSU but it is 650w and has enough amps:

Output:
+12V1 23A Max
+12V2 23A Max
+5V 40A Max

+3.3V 30A Max
-12V 0.8A Max
+5V/SB 3.0A Max

if anyone can solve my problem or help me I will be very happy as I cannot run my brand new graphics card 🙁

here is my post on your forum: http://www.tomshardware.co.uk/forum/page-267400_15_0.html

I thought I would ask here as it must be related to my PSU as it is a low quality one?

 

[unrealed99]

My PSU is low quality and not delivering enough power.

I am going to buy an Antec earthwatts EA500 PSU which should power the HD 4870 graphics card np.

 

[twinflame]

cm extreme power plus 650w got x4 6pin cable for the ati hd4870 cf ?