About AMD CPU memory motherboard frequency issues

The motherboard is generally easy to choose, and the external frequency of the motherboard that supports the specification is at 2600MHz and the specification is eliminated at 1800hmz, not to mention

Now motherboards are almost all specifications and support frequencies.

So the motherboard only needs to buy the standard one.

CPU bandwidth = HT frequency bit width (currently CPUs are all 64 bits).

Memory bandwidth = memory frequency bit width (memory is also 64 bits).

For example, the CPU is AMD Athlonx X2 245, and its HT bus frequency is 1800MHz, so its bandwidth is.

Then it is best to choose two DDR2 800 memory to form a dual channel (the bit width of dual channels is doubled).

That is to say, 800 64 2= close to the CPU bandwidth, to achieve balance.

Or choose a DDR3 1333 calculation formula 1333*64=, and the bandwidth can barely catch up. There is a partial loss of performance.

I've read in the computer newspaper that the memory bandwidth should be the same as the CPU. Therefore, if you choose DDR3 single memory, it is best to add one to form a dual channel after the price is reduced in the future.

You should choose the motherboard to match the CPU first

Wouldn't it be nice to choose the motherboard like that? Choose the same frequency.

This doesn't need to be matched. Because the motherboard is all CPUs that support the same bracket. There's no need to ask for the motherboard too much.

The motherboard is good or bad because of its north-south bridge chips. Everything else is bad. The memory can be directly selected from the frequency compatible with the motherboard.

The CPU is just his processing speed. It doesn't have much to do with motherboard memory. Memory is pre-read hardware.

The larger the memory. The faster he reads. And there are no bandwidth issues either.

Bandwidth is a term used on the web. The total velocity of a line is called bandwidth.

1. Yes, so AMD's memory performance is better than Intel's. Later, Intel also learned from AMD's trick and integrated a memory manager in the new versions of CPUs such as the i7 i5 i3, so the memory performance also improved.

2. The biggest feature of the AMD series is backward compatibility, that is, if you can get DDR3, you will definitely be able to go to DDR2. Therefore, the motherboard of AM3 can also have DD2 memory slots, which can protect the customer's investment, and the previous DDR2 does not need to be thrown away, and can continue to be used.

3. Yes, if there is DDR4, the interface will change, but according to AMD's usual style, DDR3 can also continue to be used. Just like DDR3 on AMD2 now.

4. Yes, as I told you above, Intel only learned this trick of AMD later. Previously, the memory manager was integrated into the motherboard's northbridge chip, and what memory on the CPU depends on the face of the motherboard chip, rather than the CPU itself. Hence the phrase "depending on the motherboard chip".

For example, the current Intel Rui dual-core, if you are on the old generation of 945 motherboards, you can only use DDR2 memory, and run to the new P43 motherboard, you can use DDR2 and DDR3 two kinds of memory, the same as the AM3 motherboard you mentioned above.

5. You're right. If Intel's CPU is not the i series, it should be said that it has nothing to do with memory, and it should not be mentioned what memory is supported, but it should be the motherboard that asks this question.

Additional answer: The CPU of AM2 cannot be plugged into the motherboard of AM3, the CPU of AM2 has 940 pins, and the motherboard of AM3 only has 938 holes, and there are two more pins to hold you up. So you can't try to experiment with DDR3 memory on AM2's CPU.

The AM3 CPU has 938 pins, while the AM2+ motherboard has 940 holes, with two more holes. So the CPU of AM3 can be plugged in and rich. Therefore, the CPU of AM3 can be connected to a motherboard with only DDR2 memory, which is a very common upgrade method.

For example, the old 790GX motherboard only has DDR2 memory, which is an AM2+ interface, and the current popular 2-core quad-core CPU is AM3, so the old motherboard and the old memory are replaced with this god U, and it will be reborn. This is a prime example of AMD protecting users' investments. AMD has always been more popular among gamers than Intel.

Intel has always had to replace all together,Intel's new version of the i3 and the old i3 are not compatible again,Now the old i3 users want to upgrade,You must throw away the motherboard CPU together。

1. In fact, the motherboard memory control is integrated in the Northbridge chip, and it is not integrated in the CPU, but there is an internal collocation between them, which can also be called docking, and it cannot be used if it is not docked. What kind of memory and CPU you use has a major relationship with the motherboard, which is why we need to consider motherboard pairing when upgrading. That is to say, after the DDR4 memory is released, as long as the new motherboard chip supports it, the CPU will still be used.

2. There are DDR2 and DDR3 memory slots on the motherboard, and we can only insert one type when using them, and the two types of memory can not be mixed (except for the special motherboard, there seem to be so many models of Yinglax).

3. As for why the socket keeps changing, this is actually a money-making strategy in the mall. "The old doesn't go, the new doesn't come. ”

The bounty you gave was high, and you were generous. But don't talk nonsense on the Internet after "2b", okay?

Good luck!!!

After the development of CPUs to dual-core, such as Core, some memory technologies are basically integrated. You can refer to the encyclopedia of Core and Centrino...

DDR3 has a lower working voltage than DDR2, and the performance is better and more power-saving from DDR2. The 4-bit read-ahead of DDR2 is upgraded to 8-bit read-ahead. DDR3 is currently capable of speeds up to 2000MHz, and although the fastest DDR2 memory speed has been increased to 800MHz to 1066MHz, DDR3 memory modules will still start at 1066MHz.

In fact, what does it matter if you buy a computer? It's not yet based on your CPU and motherboard???

In fact, the question you asked is too complicated, to explain it simply: A and I CPUs no matter which one, it is a replacement product of technological progress, generally speaking, they are backward compatible, but the A platform can only install AMD's CPU, the I platform can only install Intel's CPU, and the same goes for memory. (Of course, the memory is not divided into motherboard platforms).

1 is 2 AM3 compatible with DDR2

3Yes, but the memory replacement is much slower than the CPU generation, and the main consideration for the memory and replacement is the motherboard.

1. Yes.

2. The motherboard of AM3 only supports DDR3 memory, the motherboard of AM2 can support DDR2 and DDR3, the motherboard of AM3 cannot use DDR3, the motherboard you see that can use AM3 CPU and DDR2 should be the motherboard of AM2, there will be no problems, but some instructions of the CPU cannot be used.

3. In fact, the update of the CPU is ahead of the memory, and it should be said that the existing AM3 CPU only has DDR3 memory. 4. Yes.

5. No, it depends on your motherboard chipset, the CPU of the i series can be used with DDR2 memory when placed on the motherboard with its own controller chip. Otherwise, only dd3 is supported.

1: No, earlier models don't.

2: No, DDR2 can be supported

3: I don't know, but their interface is the same It can be supported by upgrading the BIOS4: Yes5: The memory controller can be implemented by the main chip Generally, the motherboards of the I-series can only use DDR3 Some have compatible designs that can use two types of memory at the same time.

Generally, the latest interface can be easily upgraded.

Memory type doesn't have to be too much of a concern, memory speed is not a bottleneck now, and there are workarounds.

For example, if you have one 2G DDR3 1333 channel, you can use two 1G DDR2 800 to form a dual channel, so that the DDR2 speed can reach 1600 for the same capacity, which is enough.

HT bus frequency = outer frequency x octave.

For example, the working frequency of DDR400 is 200MHz, and when you exceed the external frequency, it is best to exceed the memory frequency to keep in sync.

AMD platform overclocking mainly pay attention to the HT bus frequency can not exceed 1100MHz, you have not changed the HT frequency doubling 5X, so HT frequency = 250M * 5 = 1250MHz, crash, change the HT frequency to 4 or 3X. In addition, the memory frequency of the AM2 platform is controlled by the CPU frequency, and there are different frequency division methods in the BIOS to set DDR2-400 533 667 800 corresponding to different memory, when you set DDR2-667, the CPU frequency: memory frequency = 6:

1, that is, when the CPU is 2G, the memory frequency is 333M, that is, DDR2 667, and when the CPU is time, the memory frequency is increased by 25%, and DDR2-533 corresponds to 7:1, so when the memory is 357M, which is equivalent to DDR2 714, more than 667, the bad DDR2 667 memory may not be able to stand it, that is, the AM2 platform BIOS memory frequency is only the frequency division mode, and the actual frequency is determined by the frequency division mode and the CPU frequency. In fact, the CPU overclocking ability is much stronger than the memory, and the DDR2 memory seems to be the same as DDR2 1250, so if it is set to DDR2-800, the bottleneck of system overclocking must be memory.

Anyway, I guess you're ht or the memory frequency is too high and the screen is black. How's your memory? Is it an overclocking strip?

How much can you exceed DDR2? Ordinary DDR2 800 memory to DDR2 1000 is not necessarily.

90nm3600+？The overclocking ability is not as good as 65nm, you set HT 4X, memory DDR2-533 cross-by-frequency mode, CPU external frequency 240M, frequency doubling 10X unchanged, disable cool and cool technology, lock PCI-E 100M, PCI 33M. After entering the system, use CPU-Z to see if the actual working frequency of the memory is 343M, and some AMD CPUs and memory are said to be external frequency:

The memory frequency is divided in the form of frequency division, such as 6000+ for high frequencies. Your memory should be Kingston Value RAM, with modern FP-Y5 chips, which are not guaranteed to be overclocked to 800. How is the system cool?

Of course, it is also very likely that your 90nmCPU physique is not good enough, and the external frequency and main frequency of the CPU have a limit value. If the memory is divided by the CPU frequency, try HT 3X, the frequency doubling is lowered as 6X, and the external frequency jumps to 333M, at this time, the main frequency of HT and CPU is rated, and the memory frequency division mode is appropriately set to ensure that the memory frequency is not too high, and you can try to find out the limit of the CPU external frequency.

If your memory is DDR, that's 667 or a little over 500.

It's very simple, I'll calculate it for you: memory frequency = CPU external frequency x (memory clock: external frequency) x2, simply put, DDR800 = 200 external frequency x 400 200 x2, for example, how did DDR2 generation 533 come from.

AMD generally doesn't have the kind of bottlenecks that Intel has. As long as the data transmission and bus transmission are matched, it will do.

The external frequency of the CPU is irrelevant to the frequency of the memory, the CPU processes data, the memory stores data, and the larger the memory, the busier the CPU.

It doesn't make much sense to explain it on the detail page, and the next professional software has been tested to know it, hehe.

What money buys what hehe.

Because Intel's historical strength is single-core computing efficiency, as well as extremely excellent control of temperature and power consumption, Intel is much stronger than AMD in these aspects, and the architecture has a higher impact on performance than the main frequency, Intel's current core microarchitecture execution efficiency is much higher than AMD's Thuban (Phenom six-core) or bulldozer, so in the case of similar factors such as the number of cores and frequency, Intel's performance is much stronger than AMD, so why are they also quad-core, Intel dares to sell more than 1000 or even 2000, and AMD's quad-core is only 600 yuan at the most expensive, because the performance is too far away.

AMD pursues a strategy of fighting a single core with multiple cores, fighting with more threads and fewer threads, so there is why Intel can only buy four cores at the price of 1000 yuan-1500 yuan, while AMD can buy six cores or even eight cores, more cores does not necessarily mean good performance, it depends on the transistor size of each core and the execution efficiency of the architecture, as well as the ability of thread arbitration, in the case of core size, execution efficiency and thread arbitration, of course, it is better to have more cores, But in fact, AMD's strategy will inevitably lead to its low single-core efficiency, and it can only rely on a large number of cores to win Intel's fewer cores, and be on par with it in terms of **, so that it has a more cost-effective advantage.

AMD's strategy is not suitable for high-end processors, because high-end can not pursue any cost performance, but the pursuit of extreme performance, including single-core performance, multi-core performance and other corresponding expansion performance, AMD can not achieve such a high single-core capability, can only turn to the low-end route to take the cost-effective card and Intel to play.

If the single-core capability is poor, the game aspect is most obvious, you will see that even the FX-8150, which claims to have eight cores, can't run games and can't run the lowest i5 2300 in the i5 that can be bought now, but if you give full play to the power of the core, in multi-threaded applications, the performance of the 8150 will be higher than that of the 2300, which is also in line with AMD's strategy, which is determined by the overall performance (multi-threading ability)**, the overall performance of the 8150 is stronger than the 2300, so** It will also be a little more expensive than 2300 (1100 yuan) (1400 yuan).