Is A10-7860K a 65W or 95W TDP APU processor?

[waltchan]

The original heatsink supplied new in retail box is the red color and heavier one that was originally found in FX-6100 when new. But when I read online, A10-7860K is only a 65W TDP processor, and AMD might have supplied the wrong size and it's too big for it.

I also have a new A10-7700K retail box rated 95W TDP with smaller-size heatsink that is the same model found in FX-6300 and FX-8320e retail box, and I wonder if it's a better idea to just swap it, and A10-7700K gets the bigger, red-color one because it's 95W, while A10-7860K gets the smaller one because it's only 65W.

So, which data is correct?

 

[whm1974]

I would check AMD's website first to find the correct information. It should be there.

 

[cbn]

65W

 

[waltchan]

65W

If it's true, I'll try to put in the smallest one originally found new in A6-7400K 65W retail box, and see how it goes. I like to save this big, heavy red-color fan heatsink for Phenom II X6, A10-5800K, and other 100W processors that ran hotter in general.

 

[.vodka]

Yes, the 7860k is a 65w part. Have a look at the table here.

You shouldn't have any issues with the 65w capable heatsink, but still do some testing and keep an eye for any throttling.

 

[waltchan]

Yes, the 7860k is a 65w part. Have a look at the table here.

You shouldn't have any issues with the 65w capable heatsink, but still do some testing and keep an eye for any throttling.

Oh, I see. So the A10-7860K comes with a "125W NS" heatsink cooler with APU rated 65W. What a waste... So, I can use this red heatsink up to FX-4130 125W max, but I'm not sure about that.

Done, I'm firing this new baby up using ASRock A88M-G/3.1. I only paid $64.50 plus tax for this A10-7860K APU that was a closeout sale. This is my very-first 2133 MHZ DDR3 RAM PC I'm testing.

 

[mtcn77]

Oh, I see. So the A10-7860K comes with a "125W NS" heatsink cooler with APU rated 65W. What a waste... So, I can use this red heatsink up to FX-4130 125W max, but I'm not sure about that.

Done, I'm firing this new baby up using ASRock A88M-G/3.1. I only paid $64.50 plus tax for this A10-7860K APU that was a closeout sale. This is my very-first 2133 MHZ DDR3 RAM PC I'm testing.

It is not about the cooler, the settings waste so much power. You have to fix it to 1.3v in order to use it. 1.5v and even water coolers aren't suitable.

 

[amd6502]

Oh, I see. So the A10-7860K comes with a "125W NS" heatsink cooler with APU rated 65W. What a waste... So, I can use this red heatsink up to FX-4130 125W max, but I'm not sure about that.

Done, I'm firing this new baby up using ASRock A88M-G/3.1. I only paid $64.50 plus tax for this A10-7860K APU that was a closeout sale. This is my very-first 2133 MHZ DDR3 RAM PC I'm testing.

It's not a waste at all. This way the cooler does not spin to a noisy 4000 rpm.

After supplying submarginal cooling solutions in the Kaveri generation they went overkill on Godavaris.

The 7860k is one of the best steamroller APUs. It rocks. You got this at a steal =)

It's safe to swap the coolers even though the 7700's all aluminum cooler is garbage.

However, if you ever intend to OC the 7860k you might as well leave the original red copper core cooler on it.

 

[waltchan]

It is not about the cooler, the settings waste so much power. You have to fix it to 1.3v in order to use it. 1.5v and even water coolers aren't suitable.

So at stock-voltage with no overclock, is it 65 W TDP? What happens if I do bus-overclocking instead of unlocked multiplier overclocking?

 

[mtcn77]

So at stock-voltage with no overclock, is it 65 W TDP? What happens if I do bus-overclocking instead of unlocked multiplier overclocking?

No, because default settings are actually industry-default. In other words, it only works at default when you turn every auto setting to manual. The oems do this to show off in the benchmarks, but then everyone goes overboard. Docp, ai tweaker etc. All a waste. You only see how good the cpu runs when you turn everything to its base default and try steady state testing. Bus overclocking is done by default and cancelled when you set docp to manual - notice the default is 'auto'. Spread spectrum and everything, it is so different from what is originally intended.

 

[AtenRa]

The original heatsink supplied new in retail box is the red color and heavier one that was originally found in FX-6100 when new. But when I read online, A10-7860K is only a 65W TDP processor, and AMD might have supplied the wrong size and it's too big for it.

I also have a new A10-7700K retail box rated 95W TDP with smaller-size heatsink that is the same model found in FX-6300 and FX-8320e, and I wonder if it's a better idea to just swap it, and A10-7700K gets the bigger, red-color one because it's 95W, while A10-7860K gets the smaller one because it's only 65W.

So, which data is correct?

The A10-7860K is 65W TDP with a 95W TDP cooler for Quite (Low) noise operation. At default settings the A10-7860K is faster than A10-7700K especially in iGPU performance since the A10-7860K has 512 Shaders at 757MHz vs 384 Shaders at 720MHz for the A10-7700K.

 

[Abwx]

Barely 50W TDP in Handbrake and 45W in Cinebench.

http://www.planet3dnow.de/cms/23887...e-leistungsaufnahme-und-energieeffizienz-cpu/

 

[mtcn77]

That 6800K is mine.
4.1@1.26v and silent.

 

[waltchan]

The A10-7860K is 65W TDP with a 95W TDP cooler for Quite (Low) noise operation. At default settings the A10-7860K is faster than A10-7700K especially in iGPU performance since the A10-7860K has 512 Shaders at 757MHz vs 384 Shaders at 720MHz for the A10-7700K.

But what's the difference between A10-7700K and A10-7860K? A10-7700K is 95W, so does it really pump out 95W and power supply runs hotter than with A10-7860K, if that's what it mean?

 

[edcoolio]

TDP is 65 Watts.

That means that the processor will need a cooling solution which will dissipate 65W, vs 95W for the other.

You are right, it will consume more power on average which will make the power supply hotter, compared to a 65W solution, under load. It will also make VRM/motherboard hotter.

Higher Wattage and TDP = more heat generated.

 

[waltchan]

What happens if I turn on "Core Performance Boost Turbo," and the stock voltage raises up to 1.40V automatically from 1.30V. Is it still 65W TDP, or 95W mysteriously without disclosing by AMD? Or, does Turbo need to be disabled at all time?

 

[mtcn77]

What happens if I turn on "Core Performance Boost Turbo," and the stock voltage raises up to 1.40V automatically from 1.30V. Is it still 65W TDP, or 95W mysteriously without disclosing by AMD? Or, does Turbo need to be disabled at all time?

It works with the "PowerNow!" as a unit. You better disable it because it starts throttling and will skip during video playback.

 

[DrMrLordX]

Do not attempt bclk OC on any Kaveri/Godavari APU. It is very difficult and not terribly rewarding.

 

[amd6502]

It works with the "PowerNow!" as a unit. You better disable it because it starts throttling and will skip during video playback.

There's little reason to disable CPB (turbo), unless you really don't care about sparse thread performance

When both the iGPU and CPU are fully loaded at the same time I think it's likely that the TDP will be exceeded for some amount of time---either until thermal throttling kicks in, or until some time-out period (which probably is a few minutes to no more than 15min in my guess) that's set either in the CPU or the BIOS. You might hook up a watt meter and play around with it to get a definite answer.

I've never before heard of CPB causing video stutter; it's possible though that with a poor cooler and poor case ventilation combined with an SFF case, that thermal throttling could kick in, either from the CPU or the VRMs not being able to tolerate the higher wattage.

 

[mtcn77]

There's little reason to disable CPB (turbo), unless you really don't care about sparse thread performance

When both the iGPU and CPU are fully loaded at the same time I think it's likely that the TDP will be exceeded for some amount of time---either until thermal throttling kicks in, or until some time-out period (which probably is a few minutes to no more than 15min in my guess) that's set either in the CPU or the BIOS. You might hook up a watt meter and play around with it to get a definite answer.

I've never before hear of CPB causing video stutter; it's possible though that with a poor cooler and poor case ventilation combined with an SFF case, that thermal throttling could kick in, either from the CPU or the VRMs not being able to tolerate the higher wattage.

Don't jump to conclusions, please. It is harder to clear them.
Well, you can observe it as it drops to 1.4GHz. It is totally unnecessary. Why use it that way, you bought it and paid for 4GHz... You can forego wattmeters, too. The cpu delivers its watt usage if you look at hwinfo and stuff. It correlates with temperature.

 

[mtcn77]

I just installed Handbrake to compare the results with Prime95. I'm still getting the most consumption out of Prime95(50w core, 60w total package). Even if the numbers are wrong, there are no stutters(TjMax never reached) with a steady overclock. I feel vindicated.

 

[waltchan]

So, what frequency speed and turbo speed you're at with A10-7860K?

 

[waltchan]

At stock voltage, A10-7860K can be overclocked up to 4.2GHz max with turbo off at 65W rating. Does this sound about right, and would the A10-7700K go a little higher since it's 95W?

 

[DrMrLordX]

I had an A10-7700k that would go all the way to about 4.2-4.3 GHz with stock volts, though it certainly went outside of its TDP rating with that behavior. Overall so will your 7860k. Use an external wattmeter to see how much juice it will chew up at those clockspeeds. The 7860k achieved such a low TDP rating by throttling aggressively under certain conditions.

 

[amd6502]

Use an external wattmeter to see how much juice it will chew up at those clockspeeds. The 7860k achieved such a low TDP rating by throttling aggressively under certain conditions.

Also, the 7860k is top binning Godavari (Kaveri optimization refresh) while 7700k is second rate binning (disabled iGPU and significanly lower stock frequencies versus flagship Kaveri 7850k) on the old non-optimized 1st gen 28nm bulk. The 7860k outperforms a 7700k at significantly lower TDP, for both base (3.6GHz) and turbo (4GHz). http://www.cpu-world.com/Compare_CPUs/AMD_AD770KXBI44JA,AMD_AD786KYBI44JC/

I thought it was mainly a Godavari process optimization but it makes sense that they'd also improve the power management between CPU and iGPU.

Many of the 7700k's could be nicely overclocked though as you say; the factory voltage settings seem to have been very conservative with tons of margin.