Can I Use Ddr2 In Ddr3 Slot
1. DDR :
DDR stands for Double Data Rate. It is used in computers and laptops, and it can transfer double data chunks to memory per clock cycle, that’s why it is called double data rate. Since the launch of DDR RAM, there have been many upgrades, which are called DDR2, DDR3, DDR4. All new versions of DDR RAM are not compatible with the earlier or later RAM. This means that the DDR2, DDR3, DDR4 memory module will not be compatible or fit in any slot in the DDR or DDR1 slot of the motherboard.
2. DDR2 :
DDR2 stands for Double Data Rate version 2 It is the second version of DDR memory. This version of RAM was developed to achieve a high data rate for block-transferring. It is the successor to DDR where the main change is applied to the operational frequency between the RAM chip and the prefetch buffer, and the amount of both parameters is increased. The prefetch buffer is 4-bit memory catch that resides in the DDR2’s RAM chip.
Can I Use Ddr2 Ram In Ddr Slot
The computer is a Compaq Presario CQ40. It currently has 1 GB of RAM DDR2 (Samsung-manufactured). There are two slots in the RAM part. It says 766 MB usable (which I think is because part of it goes to being the graphics card). Some of the Asrock boards take ddr and ddr2 but you can only run one or the other not both at the same time as the voltages are different. DDR2 667 and DDR2 533 fit in the same slot, there is however 533 ram that is ddr not very common but it's out there. The first commercial product to claim using the 'DDR2' technology was the Nvidia GeForce FX 5800 graphics card. However, it is important to note that this GDDR2 memory used on graphics cards is not DDR2 per se, but rather an early midpoint between DDR and DDR2 technologies. Using 'DDR2' to refer to GDDR2 is a colloquial misnomer. DDR2 DIMMs are not designed to be backward compatible with DDR DIMMs. The notch on DDR2 DIMMs is in a different position from DDR DIMMs, and the pin density is higher than DDR DIMMs in desktops. DDR2 is a 240-pin module, DDR is a 184-pin module.
Difference between DDR and DDR2 :
| S.No. | DDR | DDR2 |
|---|---|---|
| 1. | DDR has 4 internal banks. | Whereas DDR2 has either 4 or 8 internal banks. |
| 2. | The transfer speed of the DDR varies between 0.20–0.40 gigatransfer per second. | While the transfer speed of DDR2 varies between 0.40–1.06 gigatransfer per second. |
| 3. | The speed of DDR is slower than that of DDR2. | While the speed of DDR2 is higher than DDR. |
| 4. | The DDR was released in the year 1998. | While DDR2 was released in the year 2003. |
| 5. | DDR is succeeded by DDR2. | While DDR2 is succeeded by DDR3. |
| 6. | The standard supply voltage of DDR is 2.5 V. | While the standard supply voltage of DDR2 is 1.8 V. |
| 7. | DDR has a bus clock speed of 100 MHz-200 MHz. | While DDR2 has a bus clock speed of 200 MHz-533 MHz. |
| 8. | DDR has a channel bandwidth of 1.60-3.20 GBps. | While DDR2 has a channel bandwidth of 3.20-8.50 GBps. |
| 9. | Performance wise DDR is not better than DDR2. | Whereas it is better than DDR in terms of performance. |
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Can I Use Ddr2 In Ddr Slotted
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