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AM3 Platform questions, lots!

post #1 of 3
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I'm no dumbass when it comes to computers. I know my 775 platform like nobody's business. However when it comes to (AMD) AM3 platform I know nothing other than PCI-E 2.0 is not too big of a deal. Unless current cards actually utilize it correctly. So I got quite a few of questions about AM3 and things I need to know before I start fixing stuff that's not broken.

CPU:
1. AM3 = 940 pins?

2. 45nm 6MB L3...that's gotta be super crazy!?! Or are such numbers comparable to a 775 45nm quad? Why? Why not?

3. Max CPU + core temp? Typical load temps? good oc load temps?

4. Stepping/Revisions, what's the difference? C2/C3 what's the difference?

5. Stock voltage? Safe OC'd voltage? Scary voltage?

That's pretty much it for that.

PLATORM:
6. List of north bridges that are good to look into?

7. 890x/990x = AMD 780i sorta?

8. Power Phase? I know 10+1 8+2 4+1...but what do they mean? What are some good numbers?

9. What is a power phase? Oddly controlled VRM's?

10. Does the cooler work like most other AMD cooling sockets?

11. SATA 6.0 or 6GB/s or whatever? Is it noticeable? Is it legit?

12. USB 3.0, does the device have to be 3.0 or is just a super fast USB port?

DDR3:
13. Why is DDR3>DDR2

14. How does DDR3 operate at higher frequency whilst using less voltage?
Why are the timings so different and is it actually faster?

Yeah...that' it so far. Someone wanna learn me
Edited by redsunx - 10/24/11 at 6:20pm
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post #2 of 3
Quote:
Originally Posted by redsunx View Post
I'm no dumbass when it comes to computers. I know my 775 platform like nobody's business. However when it comes to (AMD) AM3 platform I know nothing other than PCI-E 2.0 is not too big of a deal. Unless current cards actually utilize it correctly. So I got quite a few of questions about AM3 and things I need to know before I start fixing stuff that's not broken.

CPU:
1. AM3 = 940 pins?
The answer can be found in the summary of many google results. http://lmgtfy.com/?q=how+many+pins+am3+socket

Quote:
2. 45nm 6MB L3...that's gotta be super crazy!?! Or are such numbers comparable to a 775 45nm quad? Why? Why not?
Performance is similar clock for clock and core for core as Core2 chips. A quick look at CPU benchmark results from top google search results, will answer this question. Unfortunately, I don't think any of us can tell you exactly how "crazy" it is, as that is very subjective. I think most people would call phenom II performance pretty ordinary these days.

Quote:
3. Max CPU + core temp?
Click "view detail" for max temps/voltages for most of their CPUs: http://products.amd.com/en-us/DesktopCPUResult.aspx

Quote:
Typical load temps?
Too many variables to answer with anything useful or meaningful IMO.

Quote:
good oc load temps?
Again, too many variables, I would personally suggest trying to keep reported temps below 50C when overclocking. Different people will have different recommendations.

Quote:
4. Stepping/Revisions, what's the difference? C2/C3 what's the difference?
This is another one of those that the answer is literally in the google page summary in a search result: http://lmgtfy.com/?q=difference+betw...nd+c3+stepping
C3 is newer/better, uses less power, offers better power management. Updated IMC improves memory overclocking etc.

Quote:
5. Stock voltage? Safe OC'd voltage? Scary voltage?
Stock: Click "view detail" for max temps/voltages for most of their CPUs: http://products.amd.com/en-us/DesktopCPUResult.aspx
Safe OC'd: No perfect answer. many go as high as 1.55V on air cooling but no overvoltage condition should ever be accepted as 100% "safe" for the CPU. Personally I suggested avoiding anything above 1.50V.
Scary: Varies with perspective. From My perspective, 1.6V+.

Quote:
PLATORM:
6. List of north bridges that are good to look into?
I assume you mean chipset, since the functions that used to be found on a northbridge chip on a motherboard (like on a 775 socket platform), have been broken up and moved around in modern architectures. All modern CPU architecture has an integrated memory controller, which used to be one of the primary functions of a northbridge on a motherboard, with that function removed, motherboards are now identified by what chipset they have.

As it turns out, while there are important differences between chipsets all the way from the 740s up through the 990s, there is nothing necessary wrong with any of them. They are all functional. The important differences are more in regard to what specific expansion needs the user may have.

Quote:
7. 890x/990x = AMD 780i sorta?
I don't know what a AMD 780i is. I'm pretty sure no such thing exists. Perhaps you have this confused with the nForce 780i chipset found in many 775 boards?

The AMD 8XX series chipsets do not carry official licensed support for SLI. The AMD 9XX series carries support on boards with enough PCIE lanes in the right places. (dual 8X operation or better).

Quote:
8. Power Phase? I know 10+1 8+2 4+1...but what do they mean? What are some good numbers?
Quality of components is more important than the number of phases, but as it turns out, most more poorly constructed VRM configurations, tend to have less phases as well. Most people on the AMD front look for 8+2 phase configuration or better for enthusiast builds.

Quote:
9. What is a power phase? Oddly controlled VRM's?
Think of it like a cylinder in an engine, the more phases, the more strokes of power to smooth the output from the engine.

Quote:
10. Does the cooler work like most other AMD cooling sockets?
It works like AM2

Quote:
11. SATA 6.0 or 6GB/s or whatever? Is it noticeable? Is it legit?
It's legit on a limited number of SSD drives. Most mechy drives are not going to take advantage of the available speed just yet, though they are getting close

Quote:
12. USB 3.0, does the device have to be 3.0 or is just a super fast USB port?
Google this one

Quote:
DDR3:
13. Why is DDR3>DDR2
Higher clocks and lower voltage operation mean higher available memory bandwidth and less wasted energy as heat.

Quote:
14. How does DDR3 operate at higher frequency whilst using less voltage?
The same way DDR2 operated at a higher frequency whilst requiring less voltage than DDR. newer fabrication tech.

Quote:
Why are the timings so different and is it actually faster?
On paper it is much faster, in the real world, the improved bandwidth is just more overhead for most systems in most situations. When you combine higher timings with higher clock rate, effective latency remains about the same. In the history of computer memory going back to well into the early 90s, effective latency on memory has not changed dramatically.
Edited by mdocod - 10/24/11 at 8:47pm
     
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post #3 of 3
well, to answers i can answer

1) not sure, WHITE socket

2) not sure either, i went from a 1090t at 4.0, and then went to a 2600k at stock, and the 2600k beats the 1090t pretty much like Mike Tyson vs a blind guy

3) not to sure about revisons... now to what i know

4) the 1090t (as well as the 1100t) (both are HEXAs) are MAX 1.55v
not sure about the other Black editions out there, both the 1090/1100 are 125 TDP

1) most are just revisions

2)typically, you want more power phases, but this isnt always true (Quality vs quanity) however, if you are getting a HEXA, everyone here will say DO NOT get a 3 or 4 + anything power phase, as there is serious issues with those, even at stock.

Typically you want a 8+X power phase, there are alot of guides around here that have better more specific answers, but if your gunna OC on AM3, you want good Power Phases

http://www.overclock.net/amd-motherb...planation.html

All you need to know about VRMS

http://www.overclock.net/nvidia/9740...-vrm-vram.html

not to sure about "coolers" ive only ever used am3 or 1155 socket coolers

sata, the difference is most noticible when running a SSD system

i dont really know any devices that are usb specific



ddr3 is better then ddr2 because its FASTER and more energie efficient? how is this possible? the same way that they make cars faster and more efficient. by research and new developments.

Timings are different because... well its different tech.

And yes it is much faster and much more noticible, especially under high end builds,

my golden rule about anything that requires assembly (at some point or another)

ITS ONLY AS GOOD AS ITS WEAKEST LINK.


dont spend 2000 on a CPU/MOBO and skimp out on the ram or video card.


SSDs = Awesome
   
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