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Core i7 920 or FX8120?

post #1 of 126
7/29/12 at 7:42pm
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.
I wants to play CPU-Z
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I wants to play CPU-Z
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post #2 of 126
7/29/12 at 7:44pm
The FX one.
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post #3 of 126
7/29/12 at 7:44pm
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.
Statius. (Latin for: "To move at once, "Immediately", "Steadfast", "Swift", Ect.....
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Statius. (Latin for: "To move at once, "Immediately", "Steadfast", "Swift", Ect.....
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8GB G.skill RipjawsX 1600MHZ Crucial M4 128GB Samsung Blu-ray Coolermaster Hyper 212 plus 
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post #4 of 126
7/29/12 at 7:50pm
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.
I wants to play CPU-Z
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I wants to play CPU-Z
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post #5 of 126
7/29/12 at 7:54pm
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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Statius. (Latin for: "To move at once, "Immediately", "Steadfast", "Swift", Ect.....
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Intel Core i5 2500K ASRock Z68 Extreme3 Gen3 Gigabyte Radeon HD 7950 Windforce X3 Sapphire Radeon HD 7950 Dual-X  
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post #6 of 126
7/29/12 at 7:57pm
oi cara, get the 920!
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post #7 of 126
7/29/12 at 7:59pm
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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Intel Core i5 2500K ASRock Z68 Extreme3 Gen3 Gigabyte Radeon HD 7950 Windforce X3 Sapphire Radeon HD 7950 Dual-X  
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8GB G.skill RipjawsX 1600MHZ Crucial M4 128GB Samsung Blu-ray Coolermaster Hyper 212 plus 
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Statius. (Latin for: "To move at once, "Immediately", "Steadfast", "Swift", Ect.....
(16 items)
 
Laptop
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Intel Core i5 2500K ASRock Z68 Extreme3 Gen3 Gigabyte Radeon HD 7950 Windforce X3 Sapphire Radeon HD 7950 Dual-X  
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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  
CaseMouseMouse PadAudio
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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Lite-on DVD/Rw Windows 7 Home Premium 64-bit Acer 15.6" 720P Lite-on 65W 
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post #8 of 126
7/29/12 at 8:00pm
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
7/29/12 at 8:01pm
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.
Statius. (Latin for: "To move at once, "Immediately", "Steadfast", "Swift", Ect.....
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RAMHard DriveOptical DriveCooling
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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Intel Pentium P6100 Intel Graphics Media Accelerator  Nanya 4GB 1066MHZ DDR3 Toshiba 320GB 2.5" 5400RPM 
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Statius. (Latin for: "To move at once, "Immediately", "Steadfast", "Swift", Ect.....
(16 items)
 
Laptop
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Intel Core i5 2500K ASRock Z68 Extreme3 Gen3 Gigabyte Radeon HD 7950 Windforce X3 Sapphire Radeon HD 7950 Dual-X  
RAMHard DriveOptical DriveCooling
8GB G.skill RipjawsX 1600MHZ Crucial M4 128GB Samsung Blu-ray Coolermaster Hyper 212 plus 
OSMonitorKeyboardPower
Windows 7 Home Premium 64-bit. Asus VE247H 24" LED Razer Lycosa Rosewill HIVE 650W  
CaseMouseMouse PadAudio
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
7/29/12 at 8:05pm
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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