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[Anandtech] AMD Launches Excavator on Desktop: The 65W Athlon X4 845 for $70 - Page 11

post #101 of 147
Quote:
Originally Posted by SpeedyVT View Post

Not drinking anything. Clock for clock same IPC if not a smudge more in somethings and smudge less in others. If you can overclock the AM1 to the same frequency you can definitely get the same performance results.

The Athlon 5350 OC's like garbage. 2.05ghz -> 2.65ghz needs a HUGE amount of vcore in my sample. IGP/NB voltages are seemingly not exposed on any AM1 boards, so I cant objectively tackle IGP/NB clock scaling.

Core 2 overclocks to the moon in comparison, even on a MUCH older process. The Athlon X2 (AM2) chips perform better and clock further.
The only thing I can honestly compare it with would be an old S-939 X2. 2.6ghz-2.8ghz average OC and very similar per clock performance.
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post #102 of 147
Quote:
Originally Posted by KarathKasun View Post

The Athlon 5350 OC's like garbage. 2.05ghz -> 2.65ghz needs a HUGE amount of vcore in my sample. IGP/NB voltages are seemingly not exposed on any AM1 boards, so I cant objectively tackle IGP/NB clock scaling.

Core 2 overclocks to the moon in comparison, even on a MUCH older process. The Athlon X2 (AM2) chips perform better and clock further.
The only thing I can honestly compare it with would be an old S-939 X2. 2.6ghz-2.8ghz average OC and very similar per clock performance.

Athlons in the am2 era? Like the 4800+, 5000+, 6400+, 6000+? They dont overclock very well. I was only able to push my 5000+ to like 3.2 and 4800+ about the same. But dont know if they are faster than am1 cpus.
    
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post #103 of 147
Quote:
Originally Posted by KarathKasun View Post

The Athlon 5350 OC's like garbage. 2.05ghz -> 2.65ghz needs a HUGE amount of vcore in my sample. IGP/NB voltages are seemingly not exposed on any AM1 boards, so I cant objectively tackle IGP/NB clock scaling.

Core 2 overclocks to the moon in comparison, even on a MUCH older process. The Athlon X2 (AM2) chips perform better and clock further.
The only thing I can honestly compare it with would be an old S-939 X2. 2.6ghz-2.8ghz average OC and very similar per clock performance.

Process has nothing to do with the core design. You're comparing apples to bananas here. Jaguar is a very tiny core compared to anything else you compared it to, by design. It was never intended to clock at ranges like 3ghz and beyond.
post #104 of 147
Thats my point, someone else was comparing IPC and overall performance to C2Q.
Quote:
Originally Posted by chuy409 View Post

Athlons in the am2 era? Like the 4800+, 5000+, 6400+, 6000+? They dont overclock very well. I was only able to push my 5000+ to like 3.2 and 4800+ about the same. But dont know if they are faster than am1 cpus.

OC wise they are better than AM1 CPUs. The ~2ghz AM2 CPUs could usually hit ~3ghz. Per core performance they were a bit better as well. Which is why I compared Jaguar with S-939 Athlons.
Edited by KarathKasun - 2/3/16 at 8:13pm
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post #105 of 147
Quote:
Originally Posted by KarathKasun View Post

The Athlon 5350 OC's like garbage. 2.05ghz -> 2.65ghz needs a HUGE amount of vcore in my sample. IGP/NB voltages are seemingly not exposed on any AM1 boards, so I cant objectively tackle IGP/NB clock scaling.

Core 2 overclocks to the moon in comparison, even on a MUCH older process. The Athlon X2 (AM2) chips perform better and clock further.
The only thing I can honestly compare it with would be an old S-939 X2. 2.6ghz-2.8ghz average OC and very similar per clock performance.

Could be wrong but I'm more than certain ASUS has a lot of features exposed.
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post #106 of 147
Quote:
Originally Posted by 7850K View Post

where did you hear this?
we'll see

here you go.. its not the best benchmark so...
http://www.planet3dnow.de/cms/18564-amd-piledriver-vs-steamroller-vs-excavator-leistungsvergleich-der-architekturen/subpage-rendering-cinebench/

CB11.5 = 20%
CB15 = 10%
post #107 of 147
Quote:
Originally Posted by SpeedyVT View Post

Could be wrong but I'm more than certain ASUS has a lot of features exposed.

I have an Asus AM1I-A system, It does not have CPU-NB voltage control. The IGP maxes out at ~880mhz and the CPU cores max out at ~2.7ghz (with +0.2v/1.5v).

To run "high" OC's (above 115 bus/2400 core) you end up having to boot ~3 times. 1st boot fails, 2nd boot is "OC fail" mode (have to save/exit BIOS), 3rd boot works with OC settings.
AM1 is not an OC friendly platform AT ALL.
Edited by KarathKasun - 2/4/16 at 11:02am
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post #108 of 147
Quote:
Originally Posted by Themisseble View Post

here you go.. its not the best benchmark so...
http://www.planet3dnow.de/cms/18564-amd-piledriver-vs-steamroller-vs-excavator-leistungsvergleich-der-architekturen/subpage-rendering-cinebench/

CB11.5 = 20%
CB15 = 10%
at 1.6Ghz. I'm not surprised carizzo is so efficient at that clock speed. It's not necessarily the same at 3.8-4Ghz. We'll have to wait and see more benches when the 845 is out.
Edited by 7850K - 2/4/16 at 3:50pm
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post #109 of 147
Quote:
Originally Posted by 7850K View Post

at 1.6Ghz. I'm not surprised carizzo is so efficient at that clock speed. It's not necessarily the same at 3.8-4Ghz. We'll have to wait and see more benches when the 845 is out.

50% clock speed = 50% Perf on Single thread.

Power efficiency in another thing.
post #110 of 147
Quote:
Originally Posted by KarathKasun View Post

The Athlon 5350 OC's like garbage. 2.05ghz -> 2.65ghz needs a HUGE amount of vcore in my sample. IGP/NB voltages are seemingly not exposed on any AM1 boards, so I cant objectively tackle IGP/NB clock scaling.

Core 2 overclocks to the moon in comparison, even on a MUCH older process. The Athlon X2 (AM2) chips perform better and clock further.
The only thing I can honestly compare it with would be an old S-939 X2. 2.6ghz-2.8ghz average OC and very similar per clock performance.

its not really the chips fault, its more about the motherboard this cpus run on. The 5350 could overclock beyond 3ghz with a much better motherboard. AM1 socket is mainstream budget though so, no real overclocking boards.
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