AMD 905e - anyone using it?

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Thomas
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AMD 905e - anyone using it?

Post by Thomas » Sun Dec 27, 2009 4:01 am

I plan on upgrading my 4850e to something faster in my Gigabyte 780G based mobo. But I dont want a wattage monster which is tough to cool quietly...

I think the 905e is interesting - low wattage (45 watt TDP) and as far as I've found out, it should be close to the 810, performance wise. It's a bit expensive though, like 30% more than the 810.

But there's very limited benchmarks, and reviews. Anyone using it? If so, what do you think about it?

CTT
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Post by CTT » Sun Dec 27, 2009 5:55 am

The 905e is 65W, so if you want the lowest TDP (AMD) quad core possible (45W) you'll have to go for an Athlon II (600e, 605e). As far as I know there's no Phenom II with 45W TDP at the moment.

Mats
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Post by Mats » Sun Dec 27, 2009 11:08 am

TDP is a limit not an exact value.
The 905e is overpriced, you might as well buy a regular 925, underclock and undervolt it and you'll be fine.
It's possible that a CPU with the newer C3 revision will undervolt even further. It might be hard to find yet though.

Thomas
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Post by Thomas » Sun Dec 27, 2009 12:54 pm

CTT wrote:The 905e is 65W, so if you want the lowest TDP (AMD) quad core possible (45W) you'll have to go for an Athlon II (600e, 605e). As far as I know there's no Phenom II with 45W TDP at the moment.
You're right, I mixed the TDP's up... But I need something with more horsepower than a 605e... So it seems I have to go with something with a higher watt-usage :?

Thomas
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Post by Thomas » Sun Dec 27, 2009 1:07 pm

Mats wrote:TDP is a limit not an exact value.
I know - but since there's (almost) no benchmarks avaible, it's the least bad indicator of wattage.
Mats wrote:The 905e is overpriced


Yup, from a performance/price point of view. But it's only 10-15% more than the 925, and if it really only was 45 w TDP, it seemed like an easy road to easy cooling. But it appeared it was 65 TDP.

Undervolting, yea, I'd do that - but which ones undervolt the best? While my 4850e undervolt some, it's not THAT impressive. So I wouldnt mind pay 10-20% extra, if I was sure it'd run cool.

Mats
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Post by Mats » Sun Dec 27, 2009 1:22 pm

It all depends on what you're going to use it for. How often are you going to stress all four cores, let alone two?

If you buy a 925 you'll always have a bit extra power for less money, but when in idle it's pretty much the same as the 905e thanks to CoolnQuiet.

If you go from 2.8 GHz, 1.4 V and 95 W to 2.5 GHz and 1.2 V you'll get 62 W, check it out.

Thomas
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Post by Thomas » Sun Dec 27, 2009 2:02 pm

80-90% of the time, it wont be stressed, just web-browsing, text editing etc.

But when I stress it, I'll be editin photos, and I want it to be reasonably quiet while I'm doing that.

The challenge here, is that I'm using Nikons Capture NX2, which is horrible programmed and it abuse the CPU. Further, there's no benchmark with this program, which indicates the performance with different CPU's. So people tend to get monster machines for this program. I cant, nor wont, spend that kind of money.

WHat I do know, is that NX2 is stabil, but slow wirh my 4850e. My laptop have a Intel Core2Duo T5550 @ 1,83 GHz, 2 MB cache, and here it runs significantly faster - but not fast enough :wink: . So I think I have good reasons to believe that less than an i7 will do fine.

At first I was very tempted by the AMD 630, but I'm much in doubt how much of a role the missing L3 cache will play with NX2. Maybe it's not needed - but I'm not sure I'm willing to run the risk. So at the moment, I'm looking at the 810 and the 925 etc...
Last edited by Thomas on Sun Dec 27, 2009 2:51 pm, edited 1 time in total.

Thomas
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Post by Thomas » Sun Dec 27, 2009 2:43 pm

The specs in the link above, says the C3 revision cant go lower than 0,9 volt, whíle the C2 is rated for 0,85 - I find it hard to see, why the C3 should undervolt better... shouldnt I aim for the C2? The specs sound more promising... :wink:

EDIT: Just checked out a couple of dealers, and it seems like the C3 is the only available revision...

elpibe10
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Post by elpibe10 » Sun Dec 27, 2009 3:47 pm

CTT wrote:The 905e is 65W, so if you want the lowest TDP (AMD) quad core possible (45W) you'll have to go for an Athlon II (600e, 605e). As far as I know there's no Phenom II with 45W TDP at the moment.
Does anyone know where I can purchaee the Energy Efficient Athlon II processors (eg. 240e, 600e, 605e) in the U.S. ?

Can't seem to find it anywhere :(

Mats
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Post by Mats » Sun Dec 27, 2009 3:49 pm

Thomas wrote:The specs in the link above, says the C3 revision cant go lower than 0,9 volt, whíle the C2 is rated for 0,85 - I find it hard to see, why the C3 should undervolt better... shouldnt I aim for the C2?
The C3 uses less power, and the Vcore ratings are the stock settings used during idle, not the minimum.

Compare the two versions of the 965 here and on the next page.

Thomas
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Post by Thomas » Sun Dec 27, 2009 11:45 pm

Wow, nice article. I'm ordering a 925 soon 8)

Thanks for sharing your great knowledge, thats super :D

Thomas
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Post by Thomas » Mon Dec 28, 2009 12:38 am

It's ordered now. It'll probably arrive next week - I'll be back with som impressions, when it's up and running :D

peerke
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Post by peerke » Tue Dec 29, 2009 9:36 am

Mats wrote:
Thomas wrote:The specs in the link above, says the C3 revision cant go lower than 0,9 volt, whíle the C2 is rated for 0,85 - I find it hard to see, why the C3 should undervolt better... shouldnt I aim for the C2?
The C3 uses less power, and the Vcore ratings are the stock settings used during idle, not the minimum.

Compare the two versions of the 965 here and on the next page.
Mats; any idea if the C3 stepping's individual core clocking would work on my GA-MA78GPM-DS2H AM2+ motherboard? I can't seem to find this information anywhere.

Greg F.
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Post by Greg F. » Tue Dec 29, 2009 10:44 am

elpibe10 wrote:
CTT wrote:The 905e is 65W, so if you want the lowest TDP (AMD) quad core possible (45W) you'll have to go for an Athlon II (600e, 605e). As far as I know there's no Phenom II with 45W TDP at the moment.
Does anyone know where I can purchaee the Energy Efficient Athlon II processors (eg. 240e, 600e, 605e) in the U.S. ?

Can't seem to find it anywhere :(
http://www.tigerdirect.com/applications ... CatId=4919

I guess they have them. They say they have them for shipment today, but I don't know why Newegg or others don't have them. Seems odd.

elpibe10
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Post by elpibe10 » Tue Dec 29, 2009 4:01 pm

Greg F. wrote:http://www.tigerdirect.com/applications ... CatId=4919

I guess they have them. They say they have them for shipment today, but I don't know why Newegg or others don't have them. Seems odd.
Thanks. Hopefully Newegg will have them soon.

Kind of strange that N.America is lagging behind Europe in AMD's product launch.

Telamon
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Post by Telamon » Tue Dec 29, 2009 8:25 pm

I grabbed my 605e from ExcaliberPC almost a month ago now. It's been darned hard to find and in fact the first store I found in North America was in a Canada seller that didn't ship to the US. Argh!

Thomas
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Post by Thomas » Fri Jan 01, 2010 10:06 am

peerke wrote:Mats; any idea if the C3 stepping's individual core clocking would work on my GA-MA78GPM-DS2H AM2+ motherboard? I can't seem to find this information anywhere.
It works on my Gigabyte GA-MA78G-DS3H.

Greg F.
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Post by Greg F. » Fri Jan 01, 2010 4:00 pm

Telamon wrote:I grabbed my 605e from ExcaliberPC almost a month ago now. It's been darned hard to find and in fact the first store I found in North America was in a Canada seller that didn't ship to the US. Argh!
And now Excaliberpc shows it as a "discontinued item" Seems like there are some strange availability issues with AMD 45w cpus right now. First they are there and then they are not.

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