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Phenom II 555 -> FX 4100 - An Upgrade or Sidegrade?

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a b à CPUs
April 1, 2012 3:49:31 PM

So, I currently have an AMD Phenom II 555 3.2Ghz processor that I had initially hoped to unlock, but after many failed attempts, i had given up, now I have the chance to upgrade, and I was originally planning to buy the Phenom II 960T as it had a 95W TDP ( I foolishly bought the M5A78L-M LX which had a max TDP of 95W) but the deal ended and it reverted back to it's base price of £120.

This left me with the £85 FX-4100 and I'm still speculating over the performance as there aren't that many in depth review on it, I have a CoolerMaster Hyper TX3 which I was planning to use to OC the FX to >4Ghz to achieve decent performance and I was just wondering if it was worth getting it, either factual information or personal experience only please.

[ Side Question : Would I need to buy thermal compound remover to use on my CoolerMaster Hyper TX3 before I move it the FX using the same thermal paste? ]

Thanks in advance!

~Post

More about : phenom 555 4100 upgrade sidegrade

a b à CPUs
April 1, 2012 3:50:30 PM

Hi :) 

IF you can find one...go for a 6 core 1100T...

All the best Brett :) 
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a b à CPUs
April 1, 2012 3:54:34 PM

Did you not even read my post....?
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April 1, 2012 4:05:55 PM

yummerzzz said:
So, I currently have an AMD Phenom II 555 3.2Ghz processor that I had initially hoped to unlock, but after many failed attempts, i had given up, now I have the chance to upgrade, and I was originally planning to buy the Phenom II 960T as it had a 95W TDP ( I foolishly bought the M5A78L-M LX which had a max TDP of 95W) but the deal ended and it reverted back to it's base price of £120.

This left me with the £85 FX-4100 and I'm still speculating over the performance as there aren't that many in depth review on it, I have a CoolerMaster Hyper TX3 which I was planning to use to OC the FX to >4Ghz to achieve decent performance and I was just wondering if it was worth getting it, either factual information or personal experience only please.

[ Side Question : Would I need to buy thermal compound remover to use on my CoolerMaster Hyper TX3 before I move it the FX using the same thermal paste? ]

Thanks in advance!

~Post

Hey bro, as for the thermal paste a simple rubbing alcohol will do make sure the surface is clean before reapply paste. As for Phenom II 555 to FX4100 yes it is an upgrade not really a sidegrade...is it worth it? yeah go for it but don't expect dramatic performance increase the FX chips do not fair munch better then Phenom II's. IF you want to unlock the cpu you need a board that supports ACC and what stepping is your 555? not all unlock and even so some not stable. Hope this helps.
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a b à CPUs
April 1, 2012 4:09:19 PM

Board supports ACC and has it's own unlocking system ( I tried manual and auto ) and it's C3 Stepping, I can quite easily OC it to 4.2Ghz. Thanks for the Thermal paste issue too!

I was wondering what kind of difference it would make in games like BF3 multiplier that eat cores for breakfast? ( Or "Modules")
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April 1, 2012 4:22:54 PM

yummerzzz said:
Board supports ACC and has it's own unlocking system ( I tried manual and auto ) and it's C3 Stepping, I can quite easily OC it to 4.2Ghz. Thanks for the Thermal paste issue too!

I was wondering what kind of difference it would make in games like BF3 multiplier that eat cores for breakfast? ( Or "Modules")

Your welcome bro, bummer on cpu side though. IT should have unlocked but guess either your chip and/or board aren't seeing eye to eye. A quad core is good enough, games don't run on more then 2 to 4 cores anyways and BF3 is really gpu intense but cpu limitation can occur. the FX4100 is good enough don't waste money on 6100 or 8150 unless your into encoding and other multicore/module intense tasking. Use the extra cahs for a nice gpu with 4100 and you should be solid....OH and 4100 can hit 4.0+. CHEERS!
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a b à CPUs
April 1, 2012 4:25:35 PM

A phenom II X4 would be better than the FX-4100. The FX series is a bust, I have a FX-6100 that I don't even use because my Phenom II X4 980 outperforms it across the board. So you want a 4 core processor with a max TDP of 95W? Well since AMD stopped producing Phenom II's they're getting harder to find. The 960T would have been my recommendation as it is easily unlocked to 6 cores and runs 95W. If you don't want to upgrade motherboard then I suppose the FX-4100 or FX-6100 are the only other options unless you want to save up some more money and get a mobo and cpu. Keep in mind that the FX-4100 has pseudocores meaning its really a 2 core chip with 2 threads per core and AMD markets it as a 4 core. The problem I had with my FX-6100 is that most software treats it like a 3 core instead of the 6 core AMD claims. So I guess a FX-4100 would technically be an upgrade but I don't think the difference will be noticable in gaming. The FX series also has a terrible IPC (Iterations per Clock/Cycle). With 80% or less efficiency it really let a lot of us AMD folk down. Thats why its hard for me to tell someone the FX is worth while.
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a b à CPUs
April 1, 2012 4:35:06 PM

Oh, I have a HD 6870 as my GPU it will be paired with, I wanted a 960T to begin with but I can't get it right now, from reviews I've seen with the horrid IPC, it is somewhat cured when it's overclocked to around 4.2Ghz, I'm just wondering how much of an improvement I'll see when i's overclocked versus my stock II 555.
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a b à CPUs
April 1, 2012 4:51:16 PM

I mean for $109 its not a bad CPU. Just not the greatest. I think the FX-4100 at about 4.3ghz could be comparable to a phenom II X4 @ 3.4ghz. Might be worth a shot. It will definately run games pretty well.
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April 1, 2012 6:02:18 PM

stickg1 said:
A phenom II X4 would be better than the FX-4100. The FX series is a bust, I have a FX-6100 that I don't even use because my Phenom II X4 980 outperforms it across the board. So you want a 4 core processor with a max TDP of 95W? Well since AMD stopped producing Phenom II's they're getting harder to find. The 960T would have been my recommendation as it is easily unlocked to 6 cores and runs 95W. If you don't want to upgrade motherboard then I suppose the FX-4100 or FX-6100 are the only other options unless you want to save up some more money and get a mobo and cpu. Keep in mind that the FX-4100 has pseudocores meaning its really a 2 core chip with 2 threads per core and AMD markets it as a 4 core. The problem I had with my FX-6100 is that most software treats it like a 3 core instead of the 6 core AMD claims. So I guess a FX-4100 would technically be an upgrade but I don't think the difference will be noticable in gaming. The FX series also has a terrible IPC (Iterations per Clock/Cycle). With 80% or less efficiency it really let a lot of us AMD folk down. Thats why its hard for me to tell someone the FX is worth while.


^+1 to this comment cant disagree with you but he should notice better performance over Phenom II 555, FX 4100 would be a solid choice for him, but seeing how he was unsuccessful with unlocking cores before it would be bad choice to recommend going after another chip to "unlock" cores what if the same thing happens and he gets faulty chip without core unlock? he would be back to square one again.
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a b à CPUs
April 1, 2012 6:04:41 PM

But either way I'd have a quad core :p 

But thanks for all your help guys!
Going with the FX-4100, I'll see what it's like.
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a c 79 à CPUs
April 1, 2012 6:05:37 PM

From a Dual 555 to a quad(ish) FX-4100 is an ok upgrade mainly just because of the extra 2 cores. The FX line was kind of a flop and in the case of the 4100 & 6100 actually get out performed in almost every way by the previous generation PhenomII X4 and X6 units.

All the same unless you have an AM3+ board you cant run the FX anyways.
My suggestion would be to save that extra $20 and get the 960T. This chip has no problem hitting 4+ Ghz (I own one) And also has a very high chance of unlocking to an X6. I can clock mine in X6 mode to 3.7Ghz on 1.35Vcore.

This is hands down the best bang for your buck AMD chip right now
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April 1, 2012 6:25:20 PM

@CM186 he's board is a AM3+ even though I agree a 960T is damn good buy, an FX is more future proof for him with newer instructions and yes software updates cant help hardware but so munch, who knows what software developers are making and having newer hardware will benefit him down the long run. Including future AMD gpu, bios updates, etc etc. BTW x6 on 3.7 with 1.35 is pretty freaking sweet spot right there. lol
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a b à CPUs
April 1, 2012 6:28:03 PM

@cm186 True, but I think he wants to play BF 3 now and not later. The 555 just won't cut it on multiplayer.



£120 to £85 is quite a difference, and will get you where it will be more playable.
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a c 79 à CPUs
April 1, 2012 6:40:44 PM

XmortisX said:
@CM186 he's board is a AM3+ even though I agree a 960T is damn good buy, an FX is more future proof for him with newer instructions and yes software updates cant help hardware but so munch, who knows what software developers are making and having newer hardware will benefit him down the long run. Including future AMD gpu, bios updates, etc etc. BTW x6 on 3.7 with 1.35 is pretty freaking sweet spot right there. lol


Eh idk about all that, the PII's are faster than the FX's so why not just buy the faster CPU for now and wait to see if PD improves the software utilization/low IPC issues that currently hinder the FX line ? It seems to make more sense then living with a slower CPU in hops that they fix it.
Thanks man, I usually just clock the 4X as it's faster in most applications but it is nice to have the X6 if i need it for heavier projects !

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a b à CPUs
April 1, 2012 6:53:01 PM

Well because the phenom II is more expensive, most of them run at 125w TPD and his motherboard has a 95w TPD max. So he needs a lower power consumption CPU. The 960T would work but its become hard to get due its awesomeness and AMD stopped manufacturing them. Get an FX-4100, it will be good for your use and should help. You have a nice GPU, maybe consider getting a 2nd one in a few months and crossfiring and you run BF3 like a boss.
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April 1, 2012 6:53:06 PM

cmi86 said:
Eh idk about all that, the PII's are faster than the FX's so why not just buy the faster CPU for now and wait to see if PD improves the software utilization/low IPC issues that currently hinder the FX line ? It seems to make more sense then living with a slower CPU in hops that they fix it.
Thanks man, I usually just clock the 4X as it's faster in most applications but it is nice to have the X6 if i need it for heavier projects !


True can't deny that statement, good one sir. I reviewed some benchmarks 960T would be faster most software. :whistle: 
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a b à CPUs
April 1, 2012 7:18:38 PM

wr6133 said:
http://www.ebuyer.com/search?q=960t&x=0&y=0

£96... now thats worth the tenner more than FX anyday.


good find dude!

@Yummerzzz - this is what you need to get. As a 4 core it will outperform the FX-4100 even if you have your 960T @ stock and FX-4100 @ 4.5ghz. The 960t will still smoke it. The 960T is the phenom II X6 with two cores disabled. I've seen way more people unlock the two extra cores than I have seen unable to do so. This is a stellar deal that wr6133 found and if you can afford it its a must buy. I kind of want one now lol.
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a b à CPUs
April 1, 2012 8:00:34 PM

I know what the Phenom II 960 is/What it can do, and I'll look into getting it thanks :D 
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a b à CPUs
April 2, 2012 12:09:13 AM

stickg1 said:
good find dude!

@Yummerzzz - this is what you need to get. As a 4 core it will outperform the FX-4100 even if you have your 960T @ stock and FX-4100 @ 4.5ghz. The 960t will still smoke it. The 960T is the phenom II X6 with two cores disabled. I've seen way more people unlock the two extra cores than I have seen unable to do so. This is a stellar deal that wr6133 found and if you can afford it its a must buy. I kind of want one now lol.

Some people are wayy too funny. 960T is 3.0 ghz stock, the 955 in this article is 3.2 ghz

FX 4100 get smoked at 4.5 ghz ... take another hit, someone is definately smoking

http://www.tomshardware.com/reviews/gaming-fx-pentium-a...

4.5 ghz FX-4100 is faster every time than a stock 955. Now if you would have been a bit more ... realistic, say 4.0 ghz vs 4.5 .. ya the phenom wins, one would expect it to since the FX-4100 is only 80% efficient as a quad core cpu.
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a b à CPUs
April 2, 2012 3:20:30 PM

Wait, looking at this chart it shows the Phenom II 955 @ 4Ghz is pretty much equal to the FX-4100 @ 4.5Ghz, and since the Zosma 960T is slower than the Deneb (IIRC), @ 4Ghz it would be pretty much equal, right?
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a b à CPUs
April 2, 2012 3:26:31 PM

For gaming I suppose it wouldn't matter. They'll all be within a few FPS of each other so just get whatever is cheapest.
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a b à CPUs
April 2, 2012 5:11:18 PM

yummerzzz said:
Wait, looking at this chart it shows the Phenom II 955 @ 4Ghz is pretty much equal to the FX-4100 @ 4.5Ghz, and since the Zosma 960T is slower than the Deneb (IIRC), @ 4Ghz it would be pretty much equal, right?

only advantage is if the 960T unlocks to an x6, youve already had one that failed to unlock so you know what the gamble is.
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a b à CPUs
April 2, 2012 8:20:25 PM

If you can get >=4.5ghz on the FX-4100 it could be worth it.. At much lower clocks you'll be surpassing the Phenom II X2 in multi-core games decently, however could suffer in most games that don't go further than 1/2 cores.

I'd prefer a Deneb or 960T.
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a b à CPUs
April 2, 2012 9:39:50 PM

Hm, well my CoolerMaster Hyper TX3 will have 2 fans mounted on it, so I should be able to push the volts up pretty high if needed.
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a b à CPUs
April 22, 2012 1:23:30 AM

Re-Bump/Open :

New Topic :

If I were to get a FX-6100, is it likely I could still reach the same speeds?
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a b à CPUs
April 22, 2012 1:43:46 AM

Max I got my FX-6100 stable was 4.4ghz. However, every chip even if it's the same model performs differently when overclocked. I've seen people get them to 5.0ghz+ and some people can only get 4.0ghz. For the price the FX-4100 is a better deal than the FX-6100, this is just my opinion of course.
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a b à CPUs
April 22, 2012 1:46:55 AM

What voltages were you using for that?
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a b à CPUs
April 22, 2012 1:48:38 AM

yummerzzz said:
What voltages were you using for that?


1.45v for 4.4ghz. I couldn't get 4.5ghz stable even if I raised it up to 1.525v (which is way higher than I would have left it at for an everyday OC I just wanted to see what needed to be done to get a higher clock).
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a b à CPUs
April 22, 2012 1:53:24 AM

When overclcoking BD chips, its better if you bump slightly the other voltages, it allows you to keep a lower cpu voltage. CPU NB, HT bus, but getting over 4.4 seems to be hit and miss with the lower end cpus (4100, 6100, 8120). some can get to 5.0 however, its all luck of the draw.
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a b à CPUs
April 22, 2012 1:59:00 AM

Hm, what kind of temps were you getting?

Also what is a safe temp to run an OC at on those chips? E.g 55c for Phenom II 9XX.
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a b à CPUs
April 22, 2012 2:03:13 AM

yummerzzz said:
Hm, what kind of temps were you getting?

Also what is a safe temp to run an OC at on those chips? E.g 55c for Phenom II 9XX.


I was around 65C. I didn't have as nice of a cooler then either. When I switched to this zalman cnps9900max on my phenom I went from 58C to 48C max load at 4.0ghz. Now I run 4.2ghz max load temp 55C..
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a b à CPUs
April 22, 2012 2:07:54 AM

So 65c is safe for the FX series?

I lost my extra fan clips for the Hyper TX3 so I'm thinking of getting a better 92mm fan (Or 2) and using that.
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a b à CPUs
April 22, 2012 2:12:39 AM

yummerzzz said:
So 65c is safe for the FX series?

I lost my extra fan clips for the Hyper TX3 so I'm thinking of getting a better 92mm fan (Or 2) and using that.


I mean nothing is going to put a beating on a chip like Prime95, AMD says max operating temp for FX is 70C. I would try to keep it 63C or below. Use push/pull fans on your cooler and get high quality high CFM and PMW fans and you should be good.
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a b à CPUs
April 22, 2012 2:14:11 AM

I've been searching for a guide for push/pull, do you have any?
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a b à CPUs
April 22, 2012 2:15:59 AM

One fan pushing through the heatsink, one fan on the opposite side pulling out the heatsink, and those should be blowing out the rear exhaust fan of your case.
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a b à CPUs
April 22, 2012 2:25:53 AM

those are good fans, that picture didnt work though
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a b à CPUs
April 22, 2012 2:28:33 AM

Quote:
if you go out and get a FX-6xxx chip I will do my best to have you perma banned.... :lol: 
then next time someone even types thought of such an idea slap yourself first..



</3

Also, I re-edited the picture
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a b à CPUs
April 22, 2012 2:39:57 AM

Not so mean mal! The guy needs an am3+ chip <=95tdp. Choices are slim in that regard
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a b à CPUs
April 22, 2012 4:34:21 AM

Ah, I don't have a front intake fan, but do have a rear exhaust.
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a b à CPUs
April 22, 2012 2:57:07 PM

Alas, there is no such thing as a pay period for me. D;
I'm also giving my current processor to a first time building friend (Who, I've advised, and has listened, to getting an 125W+ TDP supporting AM3+ motherboard) along with my HDD, and he's nearly acquired all the parts.

my case does fit ATX motherboars, but frankly, I can't be bothered re-installing it, especially with how rigid this PSU's cables are, which Is why I'm so hell-bent on either the FX-4100 of 6100, what every happened to the FX-4120, did that ever hit production?

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a b à CPUs
April 22, 2012 3:04:22 PM

Unfortunately my chip does not unlock, which, could possibly be because of the fact my motherboard only has TDP support of 95W, but then again, not even a single core unlocked, but yes, I can adn do run it at 4.2Ghz.
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a b à CPUs
April 22, 2012 3:04:43 PM

yummerzzz said:
Alas, there is no such thing as a pay period for me. D;
I'm also giving my current processor to a first time building friend (Who, I've advised, and has listened, to getting an 125W+ TDP supporting AM3+ motherboard) along with my HDD, and he's nearly acquired all the parts.

my case does fit ATX motherboars, but frankly, I can't be bothered re-installing it, especially with how rigid this PSU's cables are, which Is why I'm so hell-bent on either the FX-4100 of 6100, what every happened to the FX-4120, did that ever hit production?


It's the FX-4170 and with that you're guaranteed 4.2ghz:

http://www.newegg.com/Product/Product.aspx?Item=N82E168...

or in UK:

http://www.amazon.co.uk/AMD-FX-4170-Processor-4-2GHz/dp...

BUT, its 125w TDP...
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a b à CPUs
April 22, 2012 3:21:04 PM

Hasn't or won't be released. If BD was a bigger hit they may have binned some out but doesn't look like they're going to. You never know they, they binned out Phenom II's for 2 years..
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a b à CPUs
April 22, 2012 3:23:41 PM

They were slated for a Q1 2012 release and we're nearing the end of Q2, so they probably won't be released, so FX-4100 or FX-6100 guyz? :3
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