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phenom 2 to sandy bridge ipc difference

B

Bman123

Diamond Member
Does anyone here know the ipc difference between Phenom 2 quad and i3 2100? I'm thinking of changing to a amd 960t to use more cores for editing but don't know how big of a overclock ill need so I don't suffer frame rate wise in games
 
Sandy Bridge has 40% higher IPC than Stars/K10.5 (Phenom II).

There IS a difference in editing favoring the P II X4 slightly, but even stock there's a huge power consumption difference. Overclocked to 4GHz, the Phenom II will only be able to match the Core i3 in gaming while using more than 2x as much power and obviously also needing a third-party heatsink. In the best scenario going for the Phenom II X4 is only a side-grade; if I were you I'd stay with the 2100.

Here's the difference in video encoding. Pay attention in particular to the Phenom II X4 940, which runs at 3GHz and should be less than 5% slower than the 960T:

35027.png


As you can see, even there there's not a big difference. Look at power consumption on the other hand:

35052.png
 
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Bman123 said:
I found a 960t that unlocks to a x6 that's why I'm asking
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Yeah, but those cores could be unstable in heavy load. Or you may need to run more voltage through the chip for it to be stable with the added cores.

Obviously an X6 is significantly faster than a Core i3 in encoding, but in gaming it's a very different story.

It's not worth it to redo everything just to get an increase in encoding performance while having a chip that has the possibility of becoming unstable at high load or needing too much voltage. And if you were gonna overclock, you'd need a third-party cooler in which case I'd just sell the 2100 and go for the 2400 instead, which is faster than the X6 in all tasks and can be overclocked to 3.8GHz on stock voltage.
 
if you are going to be running a highly oced Phenom X4 then you will probably want a new power supply too. that psu is only rated for a max of 336watts on the 12v line at just 30C and your full system with Phenom 2 X4 at just 3.8 will consume fairly close to that. unlocked and at 4.0 and your full system will certainly consume 336watts or more under heavy load.
 
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Don Karnage said:
I3 2120 now
I3 3240 in 2 months

Ivy Bridge I3's are going to be nasty when compared to Phenom II's
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Just shows you how far an efficient and powerful architecture can go. If you were to go by first impressions you'd say the Core i3 would be a lot slower.

The same thing is happening in the mobile market with Tegra 3 and the newest dual-core Enyxos. Sometimes "MOAR CORES!!!" isn't the answer.
 
Go for the six-core Phenom II if you get a good deal. The two extra cores are going to be a nice boost. If the compensation price is too great, though, I wouldn't bother. Also, Phenoms do just fine in games as well, so you will have a much faster all-rounder which does consume more watts, but what to do. It's your call.

http://www.anandtech.com/bench/Product/203?vs=289

When the i3 beats the Phenom II, the difference is really minimal. In other things, especially in what you said you were going to do, the Phenom II is much faster. If you can handle the power consumption you should be more than fine with the Phenom.
 
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Still, spending money on a CPU with a slight clock difference and a new motherboard & chipset which may or may not turn out to be that great in the future is a gamble. I do not suggest it, but that is my opinion.
 
Hatisherrif said:
Still, spending money on a CPU with a slight clock difference and a new motherboard & chipset which may or may not turn out to be that great in the future is a gamble. I do not suggest it, but that is my opinion.
Click to expand...

We're talkin a hundred dollar mobo. Its not like its a 300 dollar mobo
 
I'm loling at all these responses...

The CPU is not giong to matter much for gaming if the 2 you are considering are even close to the same generation and clock speed. Gaming is 80% GPU.

If you are sick of your encoding taking so long, throw that 4 core or 6 core thuban in an AMD 800 series or better board and go to town 😛
 
superccs said:
I'm loling at all these responses...

The CPU is not giong to matter much for gaming if the 2 you are considering are even close to the same generation and clock speed. Gaming is 80% GPU.

If you are sick of your encoding taking so long, throw that 4 core or 6 core thuban in an AMD 800 series or better board and go to town 😛
Click to expand...

^Yeah this is pretty much what I was getting ready to respond with.

AMD gets destroyed by Intel in IPC, single threaded performance and power usage(which sucks to admit because I've always liked AMD), but encoding is where a Thuban(or even Bulldozer) really shines. Phenom II X6 mops the floor with an i3 on any heavily multithreaded task with both processors stock, even more so once the Phenom is overclocked. If you can get the 960t for a good price and you know it will be a stable core unlock to 6 cores, it'd be a no brainer to switch to it if you're worried about encoding time. Most Thubans hit 3.8GHz+ easily, and many will hit 4GHz with a decent cooler.

Your 4870 is your bottleneck in games anyways, not your CPU. I have 2 overclocked 4890's in crossfire and my bottleneck definitely seems to be the video cards, even in cpu intensive games. Large BF3 multiplayer maps even have my cpu running at ~40% and my video cards maxed out.(Phenom 2 X6 1090T currently running stock speed and significantly undervolted)
 
I also agree, go for the 960t if it is stable unlocked. If not you can always find a x6 proc. I have a x6 and 2 x4's and love them. Wouldn't change them out for anything right now.
 
At least with my 960t I have both extra cores unlocked @ 3.6 with the n/b @ 2600 both at stock voltage, with all the power saving crap turned on and 24/7 stable.... I'm sure not everyone will get chip that unlocks that easy but from what I understand there is a pretty good success rate with these chips.

I don't know how well an i3 would do with this, but I can also have netflix playing on one screen, something encoding in the background and be playing a game at the same time with no hiccups at all. I'll take 5-10 less fps for being able to do that.

Plus there is having an am3+ board if Piledriver cores turn out to be as good as people are rumoring with Trinity.
 
I have a Phenom II 960T, while I like the CPU I wouldn't downgrade to a dead platform. I'm pretty sure in gaming @ 1080P you will not see a difference with either CPU. After seeing the Ivy bridge review I will be looking for a used 2600K and a nice Z77 board in the future.
 
Well what about this.
Sell i3 and board get a 960t and 970 gigabyte board for $20 out of pocket
Sell i3 and board get a 1045t and 970 gigabyte board for $40
Sell i3 keep the board and get a i5 2400 for $60
Sell i3 and board get a 2500k and z68 or z77 board for $120
 
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