Will it be a problem if i insert 256MB Ram with 128MB ram already present?

Answer 1

I doubt there will be a problem if the memory is ddr.

But it is best to research the mother board that you have to see if it can handle it.

Answer 2

Put the 256mb where the 128mb is move the 128mb into the very next slot, and it should work. Providing the RAM type matches.

Answer 3

A RAM is nothing more than temporary memory of the computer. Inserting an additional ram will not create any problem, in fact it will make ur pc faster. The RAmM slot is right next to the first one.

Answer 4

If u follow some rules u will not get any trouble by adding more memory to ur computer.
U must be shure u add same type of memory(SDRAM or DDRAM, DDRAM2) Anyway u cannot fix different type of memory in the same time even if u have connectors for both type of memories (some motherboards are shipped with both connectors for SDRAM and DDRAM).
In case u have different memories(i mean if u have same type but different timing specifications) u should set from BIOS the timings to the safest values in the begining...or in auto mode to be sure that ur computer starts.

Answer 5

It depends on the bus speed and RAM type

Old ram bus speed 33Mbps
New ram bus speed 100Mbps both should match

Both should be either DDRAM or SDRAM.

If not the case boot process will detech both memory size but os will not use the extened memory.
mostly windows will crash when forced to use the extended memory.

Answer 6

No, i don't think so, as long as the motherboard can support them.

These some info about memory type:
(source: pc magazine)

Memory. Along with the processor, system memory is one of the most important determinants of your desktop's performance, because it holds the data the CPU needs to do its job. System memory comes in a variety of speeds, shapes, and sizes.
oDRAM (dynamic random access memory). DRAM temporarily stores data and instructions used by the CPU (and other devices). The information is lost when the system shuts down. Earlier desktops used FPM (Fast Page Mode) and EDO (Extended Data-Out) RAM, but these were too slow to keep up with the faster processors, creating a bottleneck that prevented the CPU from performing at optimal speed.
oSRAM (static RAM). This is a very expensive high-speed memory used primarily to cache information, thus speeding the processor's access to data and instructions. System cache memory resided on the motherboard in earlier systems, but is now integrated into the processor as L1 (primary), L2 (secondary), and occasionally L3 (tertiary) cache, which hold small amounts of data that is frequently used by the CPU.
oSDRAM (synchronous dynamic RAM). SDRAM is the most common form of desktop memory used today. It is the basis for DDR and DDR2 memory. SDRAM is synchronized with the CPU's clock, so there is little or no downtime when transferring data to the processor. SDRAM is available in DIMMS (dual in-line memory modules).
oRDRAM (Rambus Dynamic RAM). Developed by Rambus and Intel, this is a unique form of system memory available for desktops. It works on a memory bus of between 600 MHz and 800 MHz. RDRAM is rare, as it proved to be more expensive and no faster than DDR SDRAM.
oDDR SDRAM (Double Data Rate SDRAM) This memory is similar to SDRAM but twice as fast at the same clock speed. It accesses data two times per clock cycle; SDRAM accesses data only once per cycle. DDR memory is available at effective (meaning the clock runs at half this speed, but transfers data like DRAM at the rated speed) speeds of 200 to 550 MHz.
oDDR2 SDRAM (2nd generation Double Data Rate SDRAM) Like DDR, except it uses an increased number of data prefetch buffers. The buffers double the amount of data transferred per clock cycle to four. But the internal core clock cycle is reduced by half to save power, which negates the gains achieved by the increase in buffers, giving the same throughput as DDR at the same clock speed. Because of its lower power consumption, vendors will be able to ramp up its speed beyond DDR's capabilities. DDR2 memory is available at speeds of 400 MHz and 533 MHz, with 667 MHz expected late this year.
oECC DRAM (error correction code DRAM). ECC is a technology used in certain memory types, particularly SDRAM, that catches and corrects accidentally changed bits without stopping the system. ECC RAM costs more than non-ECC RAM, and is used in mission-critical applications like workstations and servers.

Answer 7

yes, the system do not recognize the additional 128 mb

Answer 8

Nope. You'll have a faster computer, though.

Answer 9

Yes, just make sure its the same type.

Answer 10

I think it will be OK if your motherboard can support it.