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[EXPReview]AMD begins to sell FX-8300 processor with 95W TDP - Page 5

post #41 of 159
12/27/12 at 4:54pm
Quote:
Originally Posted by j3st3r View Post

I'll say it once and I'll say it again:
the amount of money you save from buying a bulldozer chip OVER the Intel equivalent is rendered useless after the power bills start coming in. In the long run you SAVE money by going Intel. No reason to buy an AMD. Sorry fanboys - just being real with you guys. This chip is just undervolted and underclocked for more money lol.

It is very obvious that you write nonsense, look at this little comparison in case you can not see where the difference is I'm not going to explain anything. rolleyes.gifbiggrin.gif

Bulldozer FX-8100/2.8ghz/95W TDP

Bulldozer FX-8120/3.1ghz/125W TDP

Piledriver FX-8300/3.3ghz/95W TDP
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post #42 of 159
12/27/12 at 4:55pm
Thread Starter 
I think the FX-8300 is going to be the beginning of AMD's revised lower TDP chips coming out. AMD has been doing this for quiet awhile. Before we know it we'll probably be seeing the 8350 w/ 95W TDP. The Phenom II X4 965be was originally 140W but a 125W revision quickly followed.

The only issue with that is Intel is getting closer and closer to the Haswell release and I am going to assume the 84W Core i5 4670k will outperform the FX-8350 in nearly all situations INCLUDING Rendering, Encoding and Encrypting. Of course by then the FX-8350 will probably be a fair amount less than it is now. I'd also bet on AMD releasing something like a FX-8370 with somewhat decent gains.

As far as the argument for power consumption goes...It's quiet well known that AMD tends to put more voltage on their CPU's than what's actually needed. For example my 5800K uses 1.4V @ Stock but it can easily be undervolted to 1.275v and be rock solid stable.
Edited by M3T4LM4N222 - 12/27/12 at 5:08pm
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post #43 of 159
12/27/12 at 5:01pm
Quote:
Originally Posted by Usario View Post

SuperPi uses x87 and is irrelevant. In the real world your G620 can't stand up to a 5GHz 8350 in anything. In gaming the 8350 is usually between the i3-3220 and i5-3470 at stock.

But it costs 30 bucks lol
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post #44 of 159
12/27/12 at 5:11pm
Quote:
Originally Posted by Junkboy View Post

Hmmmm normally the lower tdp chips have a bit better tolerances and have better efficiency no? If so I wonder what one of these could OC to and if our OC brethren would be better served just buying these for a better chance at high OC's . thinking.gif

Lower power chips aren't made any differently. Parts are just binned, and those with leakage below a certain threshold at target clocks can be labeled low power.

Low power chips don't always OC better either. Indeed many times they will OC worse, if they are OCed in a situation where thermals are not the primary limiting factor.

Higher leakage often implies higher maximum clock speed potential for a given voltage, even if power consumption and heat output are greater.
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post #45 of 159
12/27/12 at 6:37pm
Quote:
Originally Posted by M3T4LM4N222 View Post

As far as the argument for power consumption goes...It's quiet well known that AMD tends to put more voltage on their CPU's than what's actually needed. For example my 5800K uses 1.4V @ Stock but it can easily be undervolted to 1.275v and be rock solid stable.

There has to be a logical reason for this though. I doubt the engineers at AMD are completely unaware of this and just set the vcore arbitrarily high. It's not good sense for them to spec their processors with a higher TDP than what is actually needed. That said, I'm sure Intel does the same thing to account for cheap PSUs and whatnot but I wonder what else is factored in.
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post #46 of 159
12/27/12 at 6:56pm
Quote:
Originally Posted by Cheetos316 View Post

There has to be a logical reason for this though. I doubt the engineers at AMD are completely unaware of this and just set the vcore arbitrarily high. It's not good sense for them to spec their processors with a higher TDP than what is actually needed. That said, I'm sure Intel does the same thing to account for cheap PSUs and whatnot but I wonder what else is factored in.

PSUs have next to nothing to do with TDP ratings. TDP is simply an arbitrary figure for how much heat a thermal solution needs to move to keep the processor within operational specifications. Every chip is different, but the TDP rating needs to cover all chips of a given model. There is usually significant headroom. Specifying too high a TDP is much better than too low.

Parts may or may not take to significant undervoltage. Default voltages are likely set under the assumption of maximum operating temperature, with all potential processor I/O taken advantage of. They also take into account voltage transients, and at least the maximum wear one would expect within the warranty period.
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post #47 of 159
12/27/12 at 8:57pm
Thread Starter 
Quote:
Originally Posted by Cheetos316 View Post

There has to be a logical reason for this though. I doubt the engineers at AMD are completely unaware of this and just set the vcore arbitrarily high. It's not good sense for them to spec their processors with a higher TDP than what is actually needed. That said, I'm sure Intel does the same thing to account for cheap PSUs and whatnot but I wonder what else is factored in.

I don't have a clue. Someone was telling me the APU's have a high voltage because of the integrated graphics but they work without issue when my whole unit is undervolted to 1.275v so I doubt that's the case. Maybe they set the high voltage so they can increase the amount of chips they can sell. Maybe some chips don't function correctly @ 1.275v @ 4000MHZ on all cores so they bumped the voltage...Who knows?
Edited by M3T4LM4N222 - 12/27/12 at 9:00pm
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post #48 of 159
12/27/12 at 9:56pm
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Quote:
Originally Posted by 8800GT View Post

Im an intel fan, not fanboy but i love intel. But i have to admit, if the game devs were able to properly allocate all 8 threads on a processor then amd wouldn't have such a bottleneck in games. Bf3 is really the only good one i can think of that does this, and the 8350 does pretty damn good in it if i remember correctly(please correct me if i'm wrong). Their single thread performance is pathetic, so they really need to fix that. At least the tdp will be lower and hopefully the temps as well allowing for better overclocks.

Yeah, but here is the thing. AMD is already getting to the same place the rest of the industry is, more cores / lower power consumption. I wouldn't expect them to be moving to higher single threaded performance, especially with their moves towards the arm stuff. Developers are going to have to get with it and start coding more threads. It has become much easier to code for as well in the past few years.
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post #49 of 159
12/27/12 at 10:01pm
Quote:
Originally Posted by M3T4LM4N222 View Post

Quote:
Originally Posted by Cheetos316 View Post

There has to be a logical reason for this though. I doubt the engineers at AMD are completely unaware of this and just set the vcore arbitrarily high. It's not good sense for them to spec their processors with a higher TDP than what is actually needed. That said, I'm sure Intel does the same thing to account for cheap PSUs and whatnot but I wonder what else is factored in.

I don't have a clue. Someone was telling me the APU's have a high voltage because of the integrated graphics but they work without issue when my whole unit is undervolted to 1.275v so I doubt that's the case. Maybe they set the high voltage so they can increase the amount of chips they can sell. Maybe some chips don't function correctly @ 1.275v @ 4000MHZ on all cores so they bumped the voltage...Who knows?

I think you're on the right track M3. I was looking at my review notes for the A10-5800 and AMD says that the same voltage you add to the CPU, you add to the GPU. I think that being the case, a higher standard voltage might be the buffer when running the CPU & GPU off the same voltage. That and perhaps high overclockability has been factored in as I got 4.8GHz/CPU and 1.1GHz/GFPU on both the A10-5800 and A8-5600.
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post #50 of 159
12/27/12 at 10:22pm
This is great move by AMD. I really like when they are trying to get their high end chips to 95 Watt tdp.
Edited by Formel - 12/28/12 at 12:42am
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