HD 7770 Minimum Power Supply

[themegadinesen]

What is the minimum PSU requirement for and HD 7770. AMD says that a 500w minimum is needed. I think 500w might be overkill...

 

[nukemaster]

I only took the PII 955BE to 3.7(500Mhz) because that is what stock voltage gave me(The cpu would actually do stock speeds on a good bit less voltage. thats a good sign ). I did not push any extra voltage.

Newer cpus should be more efficient(less power/less heat and under some workloads faster), but some reviews seem to show them as not always better. It is best to check out some reviews.

Just as an example.
http://www.tomshardware.com/reviews/fx-8150-zambezi-bulldozer-990fx,3043-12.html

Some games also happen to favor Intel's current cpus as well(or are bottlenecked my current AMD cpus, hard to tell), while others perform the same on all cpus.

 

[themegadinesen]

I think I'm going for the FX-4100.. Just because I can overclock it higher. Also I heard that Microsoft released hotfixes for Windows 7 because Bulldozer chips had an issue.. What kind of issue was it and does the hotfixes improve performance?

 

[mohit9206]

it barely improves performance. get fx 4300 instead of 4100

 

[themegadinesen]

Can't seem to find a FX-4300 on eBay :/
Also if I overclock the FX 4100/FX 4300 to lets say... 4.5 GHZ.. Will the TDP of the increase?

 

[nukemaster]

All overclocking increases the TDP. More speed, more power.

 

[themegadinesen]

Even if I overclock it a little? 🙁
I am on very tight budget and the motherboard I'm buying only supports CPUs with a 95W TDP. Sure the FX 4100 will work but I want to have at least a small overclocking headroom.. like 4.2GHZ.

 

[nukemaster]

AMD sells a 3.8/4.0 turbo within the 95 watt limit.

Now that said, It is all down to what the board's power system can do. Normally they have some kind of tolerance.

Gigiabyte recommends no more then 95 for boards like the older H55n USB3, but many users push well past that . I actually undervolted my cpu on that board to LOWER the TDP(SFF case and all).

I would say try to staying within stock voltage if you can(and don't go overboard. small steps).

 

[themegadinesen]

I won't go crazy on overclocking and thanks for your tips 😛
And is the FX-4100 a good choice? Or would I be better off with an i3?

 

[prototype18]

I won't go crazy on overclocking and thanks for your tips 😛
And is the FX-4100 a good choice? Or would I be better off with an i3?

Not to open a war but u would be better with an I3.

Hd 7770 will not get more than 50 W on peak load .

And the i3 2100 = 65W and the 3220 = 55 W

While the Fx 4100 is 95W w/o OC.

So u will be ok with a 450W-500W cpu.

Cx 430 Would be perfect .You can get it at newegg for 35 $.

It can deliver up to 548.8 W

http://www.hardwaresecrets.com/article/Corsair-CX430-Power-Supply-Review/1200

 

[nukemaster]

.....Cx 430 Would be perfect .You can get it at newegg for 35 $.

It can deliver up to 548.8 W

http://www.hardwaresecrets.com/article/Corsair-CX430-Power-Supply-Review/1200

But it was well out of specs by that point 😛

Still can not go wrong with that power supply. I PEAKED at about 350(From the wall) from the wall(OCCT PSU stress test) on a 4.4 ghz i7(2600K @ ~1.25 130 watts if I trust hardware monitor and 123 according to the eXtreme psu calc) with a 5870(old and can take some power).

Will still power your system without ANY issues. The board would be the limit on the AMD build.

 

[prototype18]

But it was well out of specs by that point 😛

With that system he wont pull 430W So he is ok

 

[themegadinesen]

Well I would want to upgrade some parts in the future.. Like buying a new motherboard and SLI'ing the 7770. This i think would near the 400w mark, right?

 

[prototype18]

Yes it would be ok .But if u have some money to spend on the PSU a good XFX 550W Pro Core Edition would be a great deal.

 

[themegadinesen]

XFX it is 😀

 

[Ocnstr]

I just bought an Asus HD7770 (2GB version). Most sites say I need 500W minimum. Is that true? Or can I just keep my faithful Corsair VX450? Config: Intel Core 2 Quad Q6600, MoBo - Asus P5Q-E, RAM: DDR2 2 GBx4 modules, 1xSSD and 2xHDD is what I got.