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Forums - PC - Two companies unveil DDR4 RAM Sticks

disolitude on 31 August 2013
Cobretti2 said:

 


On a side note, how will old games perform with DDR4? i.e. where they programmed in a way to work with DDR3 architecture or ram type doesn't really matter too much?

This is a very complicated question.

What platform?

Intel i7 high end? No performance difference what so ever... Even new game you won't see performance difference with a human eye for at least 5 years.

AMD A10 APU? You will see substantial performance increase in old or new games. APU uses CPU ram for the GPU hence the faster the RAM, the faster the GPU can work.

Also Intels HD4000 and other integrated graphics will benefit DDR4 for gaming.



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HokageTenshi on 31 August 2013

i can see people got another NEXT-GEN topic to talk about now...



disolitude on 31 August 2013

Here is a chart for those who want to know the differences between DDR3 and DDR4. Looking at this I predict that DDR4 will be a consumer bust...

Summary:

Supports larger capacity RAM - I'm sure people on the consumer side are pushing their 32-64 GB of RAM to the max

Supports lower voltages - not sure anyone will care on the consumer side

Supports true off state - great for tablets/smartphones, laptops I guess

Supports higher default speeds - none of which can be currently utilized in realiztic performance benefits, and with world moving towards server based cloud computing...

No word on timings - my guess is they are same or worse as DDR3 since DDR3 was worse than DDR2.

 

http://www.micron.com/products/dram/ddr3-to-ddr4

DDR4 – Advantages of Migrating from DDR3

DDR4 is the next evolution in DRAM, bringing even higher performance and more robust control features while improving energy economy for enterprise, micro-server, tablet, and ultrathin client applications. The following table compares some of the key feature differences between DDR3 and DDR4.

Feature/OptionDDR3DDR4DDR4 Advantage
Voltage (core and I/O) 1.5V 1.2V Reduces memory power demand
VREF inputs 2 – DQs and CMD/ADDR 1 – CMD/ADDR VREFDQ now internal
Low voltage standard Yes
(DDR3L at 1.35V)		 Anticipated
(likely 1.05V)		 Memory power reductions
Data rate (Mb/s) 800, 1066, 1333, 1600, 1866, 2133 1600, 1866, 2133, 2400, 2667, 3200 Migration to higher‐speed I/O
Densities 512Mb–8Gb 2Gb–16Gb Better enablement for large-capacity memory subsystems
Internal banks 8 16 More banks
Bank groups (BG) 0 4 Faster burst accesses
tCK – DLL enabled 300 MHz to 800 MHz 667 MHz to 1.6 GHz Higher data rates
tCK – DLL disabled 10 MHz to 125 MHz (optional) Undefined to 125 MHz DLL-off now fully supported
Read latency AL + CL AL + CL Expanded values
Write latency AL + CWL AL + CWL Expanded values
DQ driver (ALT) 40Ω 48Ω Optimized for PtP (point-to-point) applications
DQ bus SSTL15 POD12 Mitigate I/O noise and power
RTT values (in Ω) 120, 60, 40, 30, 20 240, 120, 80, 60, 48, 40, 34 Support higher data rates
RTT not allowed READ bursts Disables during READ bursts Ease-of-use
ODT modes Nominal, dynamic Nominal, dynamic, park Additional control mode; supports OTF value change
ODT control ODT signaling required ODT signaling not required Ease of ODT control, allows non-ODT routing on PtP applications
Multipurpose register (MPR) Four registers – 1 defined, 3 RFU Four registers – 3 defined, 1 RFU Provides additional specialty readout


Stinky on 31 August 2013

I've been holding off my system upgrade for DDR4 and AMD integrated CPU/GPU as per the new consoles.