5770 on codegen 400w

Page 2 - Seeking answers? Join the Tom's Hardware community: where nearly two million members share solutions and discuss the latest tech.


Right now i have 160$, and in my country a HD5770 Vapor-X costs about 160$.
 


And i really wanna get the Vapor-X.

My uncle(hes a PC spec) said that my current rig with the HD5770 will need 390W, but i have 400W
 
Post up the specs for your current rig, dude.

I've got an i5 750 @ 3.5GHZ and two 5770s in crossfire and I'm only using ~330 watts, so 390 watts for one card sounds a bit strange.
 
A nice 80+ 400W PSU and a 5770 would be all he really needs. To be honest a 400W would be good up to a GTX 560/ HD 6950, actually, depending on the PSU brand.
 
Manufacturers also recommend 650 watts for a 5770 crossfire setup, and as I've said before mine run just fine on my Xigmatek 400W.

Being under the minimum manufacturer's requirements doesn't magically mean your system won't work.
 


Right now i have:
Intel i5 760 2.8Ghz@2.8.Ghz
4Gb DDR3 RAM
250Gb SATA3 HDD
Codegen ATX 400W PSU

need more?
 
As everyone has said, your PSU will most likely not be able to handle the load of the CPU and GPU at once. You may have to compromise, as much as I know that probably sucks. 390W is about right as a guess, but that PSU isn't really going to give you that under most conditions.

Wattage is a very basic measurement and a general way to gauge PSU's, but it can be misleading, as sometimes these no-name PSU's can only produce that kind of wattage under specific conditions as a maximum output.

The additional information you provided with the picture tells us that your amps are low. For instance, on your 12v rail, you want no less than 25 Amps, for steady, stong power. You have what looks to be 10. Pretty low there. Less than a good 300W should have, in fact.
 


The cheapest what i can buy in my country is Sapphire Radeon HD5770, 1GB, GDDR5
 

this will sound funny, but can u recommend me a good PSU under 50$
 


And i think im going to buy the HD5770 next month, but the PSU-later.

Anyway, i like this one http://www.dateks.lv/cenas/73/52015_tecnoware_550w_14cm_fan.php
 


Maybe for now i will buy a HD5770, and later a 750W PSU and another HD5770

What do u think?
 


But i wanna play newest games. I cant do that on my 8400GS.
 
RobisssLV, don't give in to temptation. Once I was as desperate as you to play the newest games. I know how it feels, you just have to be patient and not rush into this. When I finally got my new parts after waiting for a while, I was damn happy and it was worth the wait.

So if I were you, get a better power supply first, then the video card. If you try a 5770 on your current PSU, you might regret it. It's better to be safe than sorry.
 


Good news. Now i have 200$ not 160$ :bounce:
 
Good stuff, over $50 for a decent 500W PSU and under $150 for a GPU.

I also got an i5 760, get the 5770 and we'll have the same CPU and GPU :).
 


Can u put a combo with PSU and GPU?
 
Oww, and will the HD5770 in crossfire handle everything on max few years further?

Right now im hoping in a single HD5770 and a cheap but powerful PSU
 
like i said before the antec eco neo 380w is a more powerful psu than what you have (despite claiming less wattage). It has 16&17Amps on each 12v rail, compared to your codegens 10 &15Amps. 12V rail is the most important spec when looking at powering GFX cards. If you want to crossfire 2 5770's you really need to look at a high quality 500w+ unit from Antec, Seasonic, Corsair, Silverstone. If you go with something cheaper like chieftec, you will want 600w. The world of power supplies is very confusing, not all manufacturers rate their power supplies wattage by the same measure which is why you can get 400w units that wil outperform 750w units. I strongly suggest that anyone that is new to building computers and is not sure about power supplies read some articles like this http://www.hardwaresecrets.com/article/Coolmax-CUL-750B-750-W-Power-Supply-Review/977/10 and this http://www.hardwaresecrets.com/article/410