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Core i7 920 or FX8120?

post #1 of 126
Thread Starter 
I have the components to make either rig work for me. What would be faster and more efficient at every day tasks and occasional gaming? I plan on running a quiet system with liquid cooling.

Basically I'm looking for whatever's more efficient without sacrificing performance. Right now I'm leaning towards the FX8120.
post #2 of 126
The FX one.
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post #3 of 126
FX-8120 runs very hot, and consumes to much power. Factor this in with inferior performance and I'd take a first gen I7 over anything AMD has to offer currently.

I7 920 all day, every day.
 
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post #4 of 126
Thread Starter 
The FX8120 is a 125W part, while the i7 920 is 130W. I'm not going to run them stock, but just wanted to point that out.

I believe the FX8120 has more overclocking headroom and thus could probably run cooler than the i7 920, but I'm not sure on efficiency.
post #5 of 126
Quote:
Originally Posted by nolonger View Post

The FX8120 is a 125W part, while the i7 920 is 130W. I'm not going to run them stock, but just wanted to point that out.
I believe the FX8120 has more overclocking headroom and thus could probably run cooler than the i7 920, but I'm not sure on efficiency.

Core i7 920 overclocked past 4.0GHZ will use what... 250W?

FX-8120 overclocked past 4.0 will use.... 400W? - And run hotter.

A core i7 920 @ 4.2GHZ would be faster then a FX-8120 @ 4.6....
 
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post #6 of 126
oi cara, get the 920!
post #7 of 126
I use to say in defence of Bulldozer, that Zambezi has failed, and not Bulldozer.

Bulldozer fails.

It's IPC (Or lack there of) and single threaded performance, stupidly high heat output and absurd power consumption combined with no abiltiy what so ever to properly feed more then 1 high end video card makes it suck...
 
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post #8 of 126
I've been using an i7-920 for nearly 4 years and just recently built a system with the i7-3770s... Go with the 8120, the i7-920 uses way more power even with both chips at stock and you will need far more cooling for the i7-920, I lapped the CPU, only overclocked it to 3.2GHz down from 4GHz got the lowest voltages I could and liquid cooled it with a double thick 2x120mm rad with some high airflow fans and the thing still ran hot as hell.

http://www.techspot.com/review/523-ivy-bridge-intel-core-i7-3770k/page10.html

Scroll down that link, it will show you some common CPU's power consumption at given frequencies...

(Stock clocks)
FX 8120 Idle: 96W load: 244W (3.1GHz)
i7-920 Idle: 149W load: 264W (2.66GHz)
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post #9 of 126
Quote:
Originally Posted by DEW21689 View Post

I've been using an i7-920 for nearly 4 years and just recently built a system with the i7-3770s... Go with the 8120, the i7-920 uses way more power even with both chips at stock and you will need far more cooling for the i7-920, I lapped the CPU, only overclocked it to 3.2GHz down from 4GHz got the lowest voltages I could and liquid cooled it with a double thick 2x120mm rad with some high airflow fans and the thing still ran hot as hell.
http://www.techspot.com/review/523-ivy-bridge-intel-core-i7-3770k/page10.html
Scroll down that link, it will show you some common CPU's power consumption at given frequencies...
(Stock clocks)
FX 8120 Idle: 96W load: 244W (3.1GHz)
i7-920 Idle: 149W load: 264W (2.66GHz)

Did you not read what I stated? - The hottest running chip (As well as power consumption) is the FX-8120. It's ability to acheive a higher core frequency is redundant when it's clock for clock performance is far behind the i7 920.
 
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8GB G.skill RipjawsX 1600MHZ Crucial M4 128GB Samsung Blu-ray Coolermaster Hyper 212 plus 
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Intel Pentium P6100 Intel Graphics Media Accelerator  Nanya 4GB 1066MHZ DDR3 Toshiba 320GB 2.5" 5400RPM 
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8GB G.skill RipjawsX 1600MHZ Crucial M4 128GB Samsung Blu-ray Coolermaster Hyper 212 plus 
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Windows 7 Home Premium 64-bit. Asus VE247H 24" LED Razer Lycosa Rosewill HIVE 650W  
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Lancool PC-K62 Razer Deathadder. Razer Goliathus Fragged Speed Omega S Asus Xonar DGX 
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Intel Pentium P6100 Intel Graphics Media Accelerator  Nanya 4GB 1066MHZ DDR3 Toshiba 320GB 2.5" 5400RPM 
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post #10 of 126
Quote:
Originally Posted by Statius View Post

Did you not read what I stated? - The hottest running chip (As well as power consumption) is the FX-8120. It's ability to acheive a higher core frequency is redundant when it's clock for clock performance is far behind the i7 920.

You threw out random incorrect numbers for power consumption. You stated the I7-920 had a lower power consumption at 4GHz than it uses at 2.6GHz... Find links with actual test data showing power consumption before just stating random numbers as fact. Yes, the 8120 uses a lot of power, but not as much as the i7-920.. I would know, I've been using one for 4 years now and I've also provided a link to test data.
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G.Skill Sniper Series low voltage OCZ Vertex 4 Max IOPS LG DVD Burner dual-layer LG Bluray Burner dual-layer 
CoolingOSPowerCase
Custom liquid Windows 7 Ultimate 64 bit Corsair AX650 Fractal Design Arc Mini 
CPUCPUMotherboardRAM
AMD Opteron 4386 AMD Opteron 4386 SUPERMICRO MBD-H8DCL-6F-O Crucial 8GB 240-Pin DDR3 1600 SDRAM ECC Registe... 
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RAMHard DriveOptical DriveOptical Drive
G.Skill Sniper Series low voltage OCZ Vertex 4 Max IOPS LG DVD Burner dual-layer LG Bluray Burner dual-layer 
CoolingOSPowerCase
Custom liquid Windows 7 Ultimate 64 bit Corsair AX650 Fractal Design Arc Mini 
CPUCPUMotherboardRAM
AMD Opteron 4386 AMD Opteron 4386 SUPERMICRO MBD-H8DCL-6F-O Crucial 8GB 240-Pin DDR3 1600 SDRAM ECC Registe... 
Hard DriveOSCaseOther
Western Digital RE WD1001FYYG 1TB 7200RPM 32MB ... Windows Server 2008 R2 SUPERMICRO CSE-825TQ-R700LPB Black Adaptec RAID 2274200-R 7805 
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