Graphic Cards Will Sapphire HD 6850 fit for my PSU ?

ashis_lakra

ashis_lakra

Contributor
Hi all,

I have following specs ( in my signature too ) :D

* C2D E7200 2.53 @ 3.01 GHZ
* Acer x193HQ 18.5" 1366x768
* 2 x 1 GB DDR2 800 RAM
* 500GB Hard Disk 7200 RPM
* MSI G31TM-P21 Motherboard
* Cooler Master 120mm X4 fan ( 1 pc)
* 2 x 80mm Normal Cabinet fans
* Corsair CX400 ( bought new )

I am planning soon to buy Sapphire HD 6850 for my rig , but i am afraid if CX400 will be able to handle my Rig with GPU. :S

Based on my study, i found CX400 has 30A on +12V rails, whereas HD 6850 only requires 25A (min). So, will it able to handle HD 6850 on full load (100%) ? How much current GPU will draw on full load ?

Please help me clarify the things, if CX400 is okay with HD 6850. :huh:
 
sumonpathak said:
i say get an 600w just to be safe
Click to expand...
Errr... He said single HD6850 and not a HD6850 XFire.
@OP - It would suffice for your specs. CX400 is a pretty good budget PSU. Go ahead with the HD6850. 30A in +12V is enough for your setup.
 
System Builder Marathon, June 2011: $500 Gaming PC : Entry-Level Sandy Bridge -> Core i3+ HD6850 with a Antec Green 380w (CX400 is similar or slightly better)
Even though the OP has OCed a bit considering its a C2D dual core and its just a 3GHz OC i would say there is no issues with your setup.
Heck. HD6850 consumes lower power than the HD4850 etc... Its more than enough for his setup IMHO.

Extreme PSU Calc Lite
E7200 @ 3GHz vCore: 1.3V
Normal Mobo
2 DDR2 sticks
1 HD6850
2 Normal SATA HDD
1 DVD R/W
2 USB peripherals + KB+ Mouse
2 80mm fans
4 120mm LED fans
90% load (recommended. Unless you bench it will almost never cross 90% load)
15% capacitor ageing
Minimum PSU Wattage: 324 W
Recommended PSU Wattage: * 374W
 
I am using the same psu with i3 540 + HD6850 , your total pc consumption at full load will be around 200 - 220 watts , this psu can easily handle it because it is very good quality.
 
@Darkangel-- very informative post,, thanks for all your effort..

@arjun, thanks 4 replying, i was looking for a real user =) But which brand did you buy ?
 
You are clear to go. But I have to say these things:

1. CPU will hold you back(sinc you'll be gaming at low resolution)

2. THe HD6850 will cry for a higher resolution monitor

So, if you have no plans for upgrading the CPU and Monitor in the near future, may I suggest buying a cheap and 2nd hand HD5770 instead?
 
If you go with Recommended PSU Wattage then you are clearly sacrificing your ability to upgrade in future.better spend a few bucks more and go for atleast 500 to 600 wattage PSU.And they won't cost you a fortune too,just adding a few more bucks will save your PSU for future.
 
^ In future also for him this PSU could be useful , power consumption is going to come down or remain same with low power 22nm CPUs and 28nm GPUS coming up, ddr3/4 will consume less than his current ddr2 ram.
 
There will always be the entry level,mainstream,enthusiast and performance levels,even if the nm shifts.And if OP gonna transit through any of these levels,he's got change his power supply.
 
Don't worry fellas, i am not going to upgrade this computer ever..

If there's such need, i will go for another new Configuration ( but not at least for another 5 years )..
 
Ameet148 said:
There will always be the entry level,mainstream,enthusiast and performance levels,even if the nm shifts.And if OP gonna transit through any of these levels,he's got change his power supply.
Click to expand...
HD4850 at its launch was a 10-12k GPU. Consumes more power than the HD6850. HD6850 beats the hell out the HD4850.
Similarly a future say HD8850 will consume power similar to HD6850 will cost similar pricing of ~10k and beat the hell out of the HD6850. So i dont see how his upgrading is being sacrificed here.
Also eventhough the TDP of the i5 760 and SB i5 2400 is the same 95w TDP the i5 2400 consumes lesser power. The Ivy Bridge and Haswell will consume even lesser.
A good 400w-450w is sufficient for a decent mid range system with a GPU that needs only 1 6-pin PCI-E power connector
 
^ thats true as long as you stay in that mainstream zone,it's not the nm shift and low power consumption that decide the wattage but it's all about,to what extreme limit you wanna take your gaming experience,and games now a days are getting more power hungry and more realistic.Increase the resolution,AA,AF and details and you gonna need a beefier PSU.
 
Can anybody tell me which is better NVIDIA GT570 or ATI HD6970 and in what terms?

Also if i can get price, it'll be great.

Thanks In advance
 
and games now a days are getting more power hungry and more realistic.Increase the resolution,AA,AF and details and you gonna need a beefier PSU.
Click to expand...

Your assumption is wrong buddy... the power consumption doesn't depend on the game fully... Its depends on the GPU that you are using... For eg. You have HD6850 and you are running the worlds heaviest and resource hog game... The GPU that you have wont go out of spec and consume more power and end up getting fried... If HD6850 consumes 125w at full load then it will consume 125w only no matter which game you play on it... I know some games which are not resource hog make the GPU to consume consume less power but i am not talking about those games... I hope that you got my point...
 
The cx400 will be enough for now.

However i might add that corsair has temp rating for those wattage output(s). Do checkout the product site. I remember that some cx 500 had its rated o/p at 30 C
 
CX400 is the older series and is good. (80+ certified, rated at higher temp, 3 years warranty)
The CX430, CX500 are the new series and not that good. (not 80+ certified, rated at 30C, 2 years warranty)
The CX430 V2 and CX500 V2 are pretty Ok. (80+ certified, rated at 30C, 3 years warranty)
Grab a CX400 for the budget systems before they vanish from the market as it has been EOLed by Corsiar.
 
ashis_lakra said:
Hi all,

I have following specs ( in my signature too ) :D

* C2D E7200 2.53 @ 3.01 GHZ
* Acer x193HQ 18.5" 1366x768
* 2 x 1 GB DDR2 800 RAM
* 500GB Hard Disk 7200 RPM
* MSI G31TM-P21 Motherboard
* Cooler Master 120mm X4 fan ( 1 pc)
* 2 x 80mm Normal Cabinet fans
* Corsair CX400 ( bought new )

I am planning soon to buy Sapphire HD 6850 for my rig , but i am afraid if CX400 will be able to handle my Rig with GPU. :S

Based on my study, i found CX400 has 30A on +12V rails, whereas HD 6850 only requires 25A (min). So, will it able to handle HD 6850 on full load (100%) ? How much current GPU will draw on full load ?

Please help me clarify the things, if CX400 is okay with HD 6850. :huh:
Click to expand...

There is a general misconception regarding the graphic cards have its own amperage rating given by manufacturer and accordingly needs a PSU that can handle the card. There is no such thing, what the manufacturers want to convey is that your system (prolly a PSU) should be capable of delivering 25A to be on safe safe. In other words, 25A is an amperage meant for whole system and not for a single card. let me clear here

TDP of HD6850 is 125W, use P=VA

125 = 12*A
A = ~ 10.5

The card will utilize only ~ 10.5A on 100% load (say with Furmark). It has been seen that, gaming stresses the card up to 80%. So, your card will utilize only ~ 8.4A from CX400 while gaming.

I'd say CX400 will surely handle your system with ease. :)
 
Back
Top