News Microsoft confirms DirectX 11.2 is a Windows 8.1, Xbox One exclusive

Just been looking at other threads and in the past to use full DX 10.1 you need everything to support 10.1, Hardware, OS, Game and Drivers, the same will be with DX11.2 Hardware, OS, Game and Drivers, ALL will have to be DX11.2 to use every possible feature, so looks like best to wait for new Radeon 8000 series or Nvidia's new GPUs next year.

Doesn't matter now of course, but next year everything changes.

 

I have been trying to find a easy to understand answer to this all day
What is the difference in bandwidth from GDDR5 to DDR3, assuming all modern GPU's use GDDR5.

When Wellsburg and DDR4 starts to appear according to this it will start at 2.4Gbps and eventually reaching 3.2Gbps
So how comparable is current gen GPU memory to next gen system memory ?

 

Be very surprised if sony actually had DX support - DX requires windows OS. They'll support all the graphics features in DX11 or whatever but almost certainly it'll be some version openGL they actually support.

 

Whether it's possible to use DX11.2 with Win 7 or current DX11 GPU's isn't the question. If there's money to be made the corporations will FORCE you to upgrade to Win8 with 8.1 AND a NEW GPU, because I doubt AMD Radeon and Nvidia will give the support away if the can make ore ££$$.

So expect to buy a new GPU... too!

 

DX11 was soon hacked and running in XP so really, don't make a mountain out of a molehill.

They will highly likely relinquish their attitude as I mentioned before and release it on other OSes.

 

Possibly to Win 7, but I doubt it, and as for Nvidia and AMD, I expect they'll make a big issue of DX11.2 on their next graphics cards, like I said if there's money to be made expect us little people to be forced to cough up.

 

They can kiss my arse.

They will have to pry Windows 7 out of my cold dead hands and Direct X 11.2 will not change my mind.

 

Probably dumb to quote myself, but i found the answer.
GTX 670 = 6.0 GB/s
DDR4 = 3.2 GB/s

 

The words not very compatible at all. Most are on ddr3 a 670 which is now last gen is aproaching what 200gb/s or something just in memory bandwidth so be a huge difference performance wise
Compared to DDR 3 which caps out at 6.4gb/s for duel channel.

Onboard gpus will benifit hugely from this though as they use the same memory already anyway.

 

I was answering the question i asked on how comparable not compatible GDDR5 is to DDR3 and the upcoming DDR4.

Nvidia lists the GTX 670,680,690 as 6.0 GB/s
http://www.geforce.co.uk/whats-new/articles/introducing-the-geforce-gtx-670-gpu
Only a GTX 770 list a higher memory speed at 7.0 GB/s

According to this DDR4 will start at 2.4Gbps and eventually reach 3.2Gbps
AFAIK DDR3 tops out around 1.7 GB/s

The point is even when the top speed DDR4 is released it will still be almost half the speed of dedicated graphics card GDDR, so i don't see DX11.2 making a huge difference to serious gamers, well anyone not relying on a IGP that is.

EDIT: or am i getting speed and/or/versus bandwidth mixed up
Because if i am a GTX 770 is 224.3 Gbps and DDR4 is up to 230 Gbps so does that mean DDR4 will be as quick as a dedicated graphics cards memory ?

 

I was under the impression that anything that didn't fit into video ram was a;ready swapped between system ram and the video ram. I guess this leaves potential for very high res textures like megatextures without all the swapping the data constantly over the PCIe bus.

It miight even make those who bought 16GB of ram for gaming pleased with their investment, if they can get around 8.1 easily

 

Unfortunately, nvidia are using the wrong measurement for memory speed. It should be 6GHz not GB/s. And the sysnopsys link should be quoting in MT/s or MHz. However that article does say that DDR4 will have a 230Gbps max bandwidth which should have the same throughput as GDDR5.

 

Thanks for clearing that up noizdaemon666 +Rep
So in theory DX 11.2 should make a BIG difference for integrated GPU's in a few years.

 

According to those numbers, but I'm not sure how they're achieving 230Gbps for DDR4 on a 72 bit wide bus. Current graphics cards have upto a 384 bit wide bus which allows for way more bandwidth (obviously)

Edit: Wait. Graphics cards have their memory bandwidth measured in GB/s not Gb/s. DDR4 will have a memory bandwidth 8 times lower than GDDR5. Not sure how I missed that first time through

 

I don't give a DAMN !

 

M7 670 currently has 227.2GB/s, no worries there then.

 

I edited my post just before you posted. Missed the B vs b in the articles linked. DDR4 will have 28.75 GB/s bandwidth (230Gb/s around double what it currently is I think) compared to GDDR5 which runs at 8 times that number (1.8Tb/s). You really don't have any worries lol

 

Ahh so we wont be throwing away our Graphics cards quiet yet then
I never have been able to get my head around b & B and all the different ways bandwidth is listed.

 

If we see major improvements in game detail and performance, I have absolutely no issue with upgrading. That's why we buy the enthusiast stuff isn't it?

 

b = bits
B = bytes

A byte is bigger than a bit, so uses a bigger 'B'