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4790T vs 4690k

Telecaster

Telecaster

Telecaster

Soldato
Joined
17 Jun 2012
Posts
5,951
Just got hold of a 4790T, thought it might be interesting to see how it compares to my 4690k for a laugh, any predictions in the usual benchmarks and gaming wise?

I will run the 4690k at 4ghz which is what it runs with an undervolt so it seems fair, should be mildy interesting to see how they compare.
 
I reckon the 4690K will tank the 4790T given the overclock. I hope not though as I picked up a 4790T myself in the past couple of days and it would be nice to see it kick butt!
 
You're correct, I've only just finished installing and testing it.

My methodology was to first test the 4690k at what I consider to be almost a fair comparison, so I set it to 4ghz (4790T can boost to 3.9ghz) which can also be run with an undervolt of -0.075v, which gives it an idle voltage of 0.65v and a load voltage of 1.05v, this meant it never got any hotter than about 55-60c with CPU fan between 350-700rpm so very quiet, it also maxed out at 56w power consumption.

So 4690k 4ghz @ 1.05v 56w 55-60c results:

Cinebench R15 - 600
Corona Benchmark - 6 minutes 23 seconds + 1,280,620 rays/sec
GTAV Benchmark - Average across passes 78.6 FPS (980ti @ 1440p with plenty of AA)
Ashes of Singularity – 39.4 FPS Average (crazy settings)
Firestrike score - 14811 - GFX 21039 - Physics 7931 – Combined 7720
Heaven 4.0 – 2399 – 95.2 FPS – 1080p max settings.

So for the 4790T, the amzing thing about this CPU is that it even takes more of an undervolt than it already has at stock, and a decent one too. It's set to -0.110v giving it an idle voltage of 0.570v and a load voltage of 0.865v when all threads are in use. Boosting to 3.9ghz it sees just under 1v. This gives it a maximum power usage of 36w(!) seen when benching, during general use I've not seen it go over about 32w, which is just crazy when you consider it's results below.

So 4790T @ 0.865v - 36W

Cinebench R15 – 672
Corona Benchmark – 4 minutes 53 seconds + 1,653,870 rays/sec
GTAV – Average across passes 81.4 FPS (Same settings)
Ashes of Singularty – 41.8 FPS (same setings)
Firestrike score 14764 – GFX 20823 – Physics 9394 – Combined 6351
Heaven 4.0 – 2455 – 97.5 FPS (same settings)

So the only one it loses out to the 4690K is in Firestrike, in which it trounces the 4690K in the physics test but loses out very slightly overall.

In the gaming benches it also wins with lower average frame times in miliseconds and in higher average minimum frame rates, which is baffling.

Now the best bit for last (personal opinion I know not everyone cares about this part) is that it can be run completely passively cooled, no fan at all, temps didn't go over about 53c degrees during any of the tests or benchmarks, the only way I could get it to go higher was with Realbench running for half an hour and even then it didn't go over dead on 60c degrees. Being a complete low noise OCD nutter this is amazing to me.

To sum up my not peer reviewd scientific research- it beats or at worst matches a 4690K @ 4ghz on all cores, whilst only using around 32W and being cooled without a fan. Nuts.

I wasn't intending to keep it as I didn't really expect this kind of performance, but I think I'll live with it for a while and see how it holds up long term.
 
I've just had a WOW moment at this old thread.

I fully believe what your saying, however I don't understand why the T is giving better performance then the K.

Does anyone else know why the slower chip is faster? I can only assume there is some wait state effect happening on the K chip.

Do you think the undervolt is effecting the K's performance but not the T? Other then this i'm confused.

What motherboard and memory are you running.
 
JasonM said:
I've just had a WOW moment at this old thread.

I fully believe what your saying, however I don't understand why the T is giving better performance then the K.

Does anyone else know why the slower chip is faster? I can only assume there is some wait state effect happening on the K chip.

Do you think the undervolt is effecting the K's performance but not the T? Other then this i'm confused.

What motherboard and memory are you running.
Click to expand...

Because its an i5 vs an i7?
 
Telecaster said:
You're correct, I've only just finished installing and testing it.

My methodology was to first test the 4690k at what I consider to be almost a fair comparison, so I set it to 4ghz (4790T can boost to 3.9ghz) which can also be run with an undervolt of -0.075v, which gives it an idle voltage of 0.65v and a load voltage of 1.05v, this meant it never got any hotter than about 55-60c with CPU fan between 350-700rpm so very quiet, it also maxed out at 56w power consumption.

So 4690k 4ghz @ 1.05v 56w 55-60c results:

Cinebench R15 - 600
Corona Benchmark - 6 minutes 23 seconds + 1,280,620 rays/sec
GTAV Benchmark - Average across passes 78.6 FPS (980ti @ 1440p with plenty of AA)
Ashes of Singularity – 39.4 FPS Average (crazy settings)
Firestrike score - 14811 - GFX 21039 - Physics 7931 – Combined 7720
Heaven 4.0 – 2399 – 95.2 FPS – 1080p max settings.

So for the 4790T, the amzing thing about this CPU is that it even takes more of an undervolt than it already has at stock, and a decent one too. It's set to -0.110v giving it an idle voltage of 0.570v and a load voltage of 0.865v when all threads are in use. Boosting to 3.9ghz it sees just under 1v. This gives it a maximum power usage of 36w(!) seen when benching, during general use I've not seen it go over about 32w, which is just crazy when you consider it's results below.

So 4790T @ 0.865v - 36W

Cinebench R15 – 672
Corona Benchmark – 4 minutes 53 seconds + 1,653,870 rays/sec
GTAV – Average across passes 81.4 FPS (Same settings)
Ashes of Singularty – 41.8 FPS (same setings)
Firestrike score 14764 – GFX 20823 – Physics 9394 – Combined 6351
Heaven 4.0 – 2455 – 97.5 FPS (same settings)

So the only one it loses out to the 4690K is in Firestrike, in which it trounces the 4690K in the physics test but loses out very slightly overall.

In the gaming benches it also wins with lower average frame times in miliseconds and in higher average minimum frame rates, which is baffling.

Now the best bit for last (personal opinion I know not everyone cares about this part) is that it can be run completely passively cooled, no fan at all, temps didn't go over about 53c degrees during any of the tests or benchmarks, the only way I could get it to go higher was with Realbench running for half an hour and even then it didn't go over dead on 60c degrees. Being a complete low noise OCD nutter this is amazing to me.

To sum up my not peer reviewd scientific research- it beats or at worst matches a 4690K @ 4ghz on all cores, whilst only using around 32W and being cooled without a fan. Nuts.

I wasn't intending to keep it as I didn't really expect this kind of performance, but I think I'll live with it for a while and see how it holds up long term.
Click to expand...

What did you use to passively cool it?
 
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