FSP (Epsilon) FX700-GLN 700W Queries

[Supershanks]

Times come to upgrade Power supply.:)

Have done a bit of research on the FSP :-
[IMG]http://homepages.nildram.co.uk/~chsmith/psu_fsm.PNG[/IMG]
Max 12v is from the p5 of the [URL="http://www.home2000.net/client/fspgroupusacom/proddetail.asp?linenumber=221"]FSP (Epsilon) FX700-GLN 700W[/URL] Spec Sheet.

Usage shows my current max loads. There are 2 areas that concern me:-
1) I am using a single CPU with a 4pin 12v connecter. I understand this will be from the split EPS 12v 8 pin - Does this mean that only a single rail 13A is available for my CPU or are both 12v1 & 12v2 both available giving upto 26 less any power drawn by PCI-E 2 ??

2) My current Gfx card is an SLI ready 6600GT. This does not however have a direct PCI-E connectoer or molex power plug, taking its power from the mobo PCI-E slot.
Am I correct in thinking that this waill be an issue as the 4Amps shown above as drawn from the 12V4 will instead be drawn via the MB24pin from 12V3.

This would give me a loading of 14A against a Full load of 12A on 12V3

I am looking for the upgrade to give me additional 12v amps to give room for

3-1) overclocking - Have currently backed off vcore to give current PSU more headroom.
If only a single rail is available to CPU then
1.35 @ 110% = 1.485V vcore on 85W CPU requires 11.67A 89.75% of Full load
Not that terrific.

3-2) Maybe add water cooling - additional load on 12V3 :undecided around 2.5A
given a load of 10A already i'm not sure how the 12v3 @ 12.5 against 12 would stand up (subject to 2) above maybe 16.5A)

3-3) Keep pace with Gfx upgrade giving option of SLI/crossfire - This looks ok as long as cards use PCI-E connecters ??????

Would greatly appreciate any clarrification
Thanks.:bowdown:

[[FSP] Grace]

Hi there,

I am sorry for the late reply. I have been away for 2 weeks and just read your message. Guess my colleagues have been too busy to reply as well.

For your question 1 & 2, here is the info on the 12V rails. Hope this helps.
12V1 - CPU 1
12V2 - CPU 2, PCIe 2
12V3 - Motherboard, SATA, 4-pin molex
12V4 - PCIe 1

The detail output figures are as the table on the following page
[url]http://www.fsp-group.com.tw/english/1_product/2_detail.asp?mainid=1&fid=98&proid=462[/url]

As for question 3, I need to check with our head office on that then get back to you tomorrow.

Thanks
Grace Liang

[[FSP] Grace]

Hi

Just want to clarify that the output figures in the first link you posted are not correct. That's why I posted the link with the correct output table yesterday as [url]http://www.fsp-group.com.tw/english/...d=98&proid=462[/url]

For Q1: As you can see each 12V rail gives 15A from the table above, it gives 180W (15A * 12V) for CPU on 12V1. With V1 & V3, the max amp for CPU will be 30A.

For Q2: The current graphic card you use is a lower end one so doesn't use much power so there is no problem with the power drawn from 12V3.

For Q3: If you do decide to upgrade your graphic card to SLI or CrossFire, Epsilon will be the right choice since it has been certified by both NVIDIA and ATI for SLI/ CrossFire.

For overclocking, you might want to get advice on that from the overclocking experts.

Hope this helps to clarify some of your questions. Let us know if you need any other info.

Thanks
Grace

[[FSP] Grace]

Not sure why the link I copied from my previous post is not working.

Try this
[url]http://www.fsp-group.com/english/1_product/2_detail.asp?mainid=1&fid=98&proid=462[/url]

[Supershanks]

I took the loading from Table 1 Page 5 of the Download Spec. Sheet slink shown in 1st post
[QUOTE]Max 12v is from the p5 of the FSP (Epsilon) FX700-GLN 700W Spec Sheet.
[/QUOTE] below my chart. itss based on the Full loading with:-
SPECIFICATION
FX700-GLN
Table. 1 Loading Table for Efficiency Measurements
3.3v 10A x 3.3 = 33 Watts
5v 10A x5 = 50 Watts
12v1 13A x12 = 156 Watts
12v2 13 A x12 = 156 Watts
12v3 12A x12 =144 Watts
12v4 12A =144 Watts
Gives total watts @ full load 683 Watts. (33+50+156x2+144x2)

I have used these figures as they are a truer representation of available power using 4x15=60Ax12= 720Watts ie no 3.3 or 5v load ??

The 3.3V & 5v rails are fairly close to my own 3.3v 10.9A & 5v 11.3A

So just 2 confirm:-
1) with a single CPU board both 12V1 & 12v2 are available to the CPU or is 12v2 only used by the PCI-e 2 (if used)

2) Using a gfx card without a direct PCI-E connectoer will draw power from 12v3
In my particular scenario that would give a 14A draw (existing 10+4) on 12v3 against a full load of 12A or a max Load of 15A

That's a bit tight isn't it. I'm glad i've not got a pair of these cards & an SLI mobo trying to
run SLI:mrgreen:

[[FSP] Grace]

1) If PCI-E 2 is used, only 12V1 is available to CPU

2) Yes, using a gfx card without a direct PCI-E connectoer will draw power from 12v3 since it's designed with the slot on MB. The "official" max load on 12V3 is 15A but I was told it can be up to 18A by our head office today. They registered it as 15A when they applied safety certificates but will update it for the next version.

[Supershanks]

Thanks a lot Grace for taking the time to clarrify matters.

[[FSP] Grace]

You are welcome. My pleasure.

Grace

[njack]

[QUOTE='[FSP] Grace']1) If PCI-E 2 is used, only 12V1 is available to CPU
[/QUOTE]

Hello, I'm using a dual core CPU and SLI. so my cpu only take the 12v1 while i'm using pci-e 2?

[[FSP] Grace]

Hi there,

Regarding your concern about 2nd 12V rail, it was designed either for the 2nd CPU or the 2nd PCI - E (not shared between them). If you are using dual CPU plus dual graphic cards, we recommend you to use Epsilon plus a new product we launched at CeBit called X3. The basic concept is that this PSU will be a 2nd PSU dedicated for powering graphic cards while the original PSU provides power for other components inside the case.

However, I did get the feedback from Intel UK that Epsilon was coping okay with the system they tested with dual CPU and dual graphic cards. The comment I got from Intel UK was --- "I got the 2nd graphics card and the system is up and running OK - it seems my concerns were unfounded! The PSU gets a little hot, but seems to be coping with the incredible loads being placed on it."

Hope this helps.
Grace

[Dazz]

I am thinking about a new PSU my ThermalTake 680w PSU [b]should[/b] be up for the task but i am having doubts, I have a X2 4400+ @ 2666MHz 1.47v (150w) 2GB Cruical PC4000, 2 WD Raptor X 150GB drives in RAID-0, 4x 140mm fans + 3x 120mm fansASUS A8N Sli Premium about 4 USB devices + a Koolance EXOS AI watercooling & also 7800GTX SLi cards at 475/1300MHz. While playing Morrowind Oblivion the system has a tendcy to powering right off duing the game (it's the only game mind) But also the most demanding. The TT PSU has triple 12v, 15A(1) + 15A(2) + 8A(3) (38A), 5.v (50A) 3.3(28A) -5(1A) -12(1A) +5VSB (2A) is this inline with SLi spec, works pefectly fine in single card mode. But this instant power off is doing my box in i think the 3rd rail maybe to weak for the other video card.

[Aldersix]

[QUOTE='[FSP] Grace'] If you are using dual CPU plus dual graphic cards, we recommend you to use Epsilon plus a new product we launched at CeBit called [B]X3[/B]. The basic concept is that this PSU will be a 2nd PSU dedicated for powering graphic cards while the original PSU provides power for other components inside the case. Grace[/QUOTE]

Grace, 1st post here but I have been following this thread and the others about your FSP (Epsilon) FX700-GLN 700W for a while and did purchase one of these power supplies. As I plan on running dual core and dual GFXs (X1900XTs)

So could you provide some more information on this new product X3 or a link to more information about it.

Thanks:)

[[FSP] Grace]

Hi Aldersix,

I have a draft DM that I can send you. Please let me know your email address or mail me at [email]grace@fspgroup.co.uk[/email]

Thanks
Grace

[Aldersix]

Grace,

Thanks you for the fast reply and got the information. Any idea on when available in USA?

[[FSP] Grace]

Hi Aldersix,

We were told by our head office that X3 should be ready for production at the end of Apr.

That means overseas offices will get the stock by end of Jun the earliest.

Grace

[Aldersix]

Thanks Grace :)