Can ram bottleneck a Gpu

[Gunn]

I have 7 gb of ram of 3 differents brands 

I have a gtx 750 ti and an i5 4670k

[TheRandomness]

No, no it can't. 7GBs is fine btw. 

[Hunter7263]

I mean technically if you are using nearly all of it on non related function it could bottleneck things but that's not typical at all.

[fjdhdhcyfhf]

You need your system ram to be equal or greater than vram. Yours should be OK but does that extra 1gb stick make a difference?

[Gunn]

oh im having some problems with gta v in singleplayer the world generates slow, There is sometimes when the texture dont load at all and i have a good hardrive 

[Mike87]

7Gb should be enough for modern games. But of course if you have something big open in the background, like Chrome, they will be fighting over RAM. I am not sure if this will cause fps drops...

[TheRandomness]

2 minutes ago, SCHISCHKA said:

You need your system ram to be equal or greater than vram. Yours should be OK but does that extra 1gb stick make a difference?

That's a myth that doesn't make sense. I've seen people run 6GB HD 7970s on systems with 4GBs of RAM. 

[Dabombinable]

It won't, and I recommend that you replace that 1GB stick with a 2GB stick so that your RAM runs dual channel properly-only half of it is running in dual channel, so that half will be currently running at 10.6GB/sec as opposed to the 21.2GB/sec of the matching sticks, as increasing the speed of the RAM is having more of an effect in newer games, and when the CPU is the limitation.

[Beef Boss]

It's always best to have all of the same brand same Mhz same size sticks. But you'll only be able to go as fast as the slowest Ram stick. 

[Dabombinable]

Just now, TheRandomness said:

That's a myth that doesn't make sense. I've seen people run 6GB HD 7970s on systems with 4GBs of RAM. 

I think that myth comes from BS such as the Nvidia Geforce 6200 Turbocache (16-64MB DDR onboard, the rest of the stated vRAM is shared) and EVGA Geforce 6200 TC (128MB DDR2, the rest of the 512MB shared)

[Majestic]

15 minutes ago, Gunn said:

oh im having some problems with gta v in singleplayer the world generates slow, There is sometimes when the texture dont load at all and i have a good hardrive 

That has more to do with the fact you're probably running all of them in single channel, and they're low frequency aswell. Your 4670K is adversely affected by the RAM setup due to a lack of bandwidth, no doubt. And GTA 5 being a CPU heavy game, yes I can guarantee your RAM setup is having an impact on your framerate.

 

However, the 750TI is likely going to be more of a limiting factor.

[Gunn]

1 minute ago, Majestic said:

That has more to do with the fact you're probably running all of them in single channel, and they're low frequency aswell. Your 4670K is adversely affected by the RAM setup, no doubt. And GTA 5 being a CPU heavy game, yes I can guarantee your RAM setup is having an impact on your framerate.

 

However, the 750TI is likely going to be more of a limiting factor.

soo i should get better ram?

[AlTech]

24 minutes ago, Gunn said:

I have 7 gb of ram of 3 differents brands 

I have a gtx 750 ti and an i5 4670k

I wouldn't recommend using different dims with different quantities of RAM

 

20 minutes ago, TheRandomness said:

7GBs is fine btw. 

Just an FYI.

 

Battlefield 1 stutters badly if people don't have 12 or 16GB RAM.......

[fjdhdhcyfhf]

11 minutes ago, TheRandomness said:

That's a myth that doesn't make sense. I've seen people run 6GB HD 7970s on systems with 4GBs of RAM. 

I think 4gb is nvidias min requirement for the 10 series. That's not much left over for games

[Dabombinable]

Just now, Gunn said:

soo i should get better ram?

At the very least replace that 1GB stick with a 2GB stick, and with DDR3 1333, you might as well upgrade to DDR3 1866 or 2400 in the future (I plan on going to DDR3 3200 with my 4790K, around 51GB/sec as opposed to my new DDR3 1600 kit at 25.6GB/sec)

[Majestic]

3 minutes ago, Gunn said:

soo i should get better ram?

Well i'd start with replacing all of them with a kit (2 dimms) of 8GB. Be it CL8/9 1600 memory or better.

 

1 minute ago, Dabombinable said:

At the very least replace that 1GB stick with a 2GB stick, and with DDR3 1333, you might as well upgrade to DDR3 1866 or 2400 in the future (I plan on going to DDR3 3200 with my 4790K, around 51GB/sec as opposed to my new DDR3 1600 kit at 25.6GB/sec)

51GB/sec? My 2400 memory is at 29GB/s, how is that possible.

[Gunn]

This ram should be good right? https://www.pccomponentes.com/g-skill-sniper-ddr3-1866-pc3-14900-8gb-2x4gb-cl9

[vorticalbox]

14 minutes ago, TheRandomness said:

That's a myth that doesn't make sense. I've seen people run 6GB HD 7970s on systems with 4GBs of RAM. 

agreed so long as you're not filling up ram to the point it has to use swap and you have enough ram for the program you want to run its no problem.

[Dabombinable]

Just now, SCHISCHKA said:

I think 4gb is nvidias min requirement for the 10 series. That's not much left over for games

That's due to 64bit Windows being predominant. As it stands, with 4GB of RAM (aka, the memory, not the vRAM) I have no problems with most games-though I really do need at least 10GB for Fallout 4.

[Majestic]

17 minutes ago, Gunn said:

This ram should be good right? https://www.pccomponentes.com/g-skill-sniper-ddr3-1866-pc3-14900-8gb-2x4gb-cl9

Rather expensive for a 8GB kit

 

EDIT: oh, everything is overpriced over there. That a portugal/spain thing? It's atleast twice as expensive as here in the Netherlands.

[Dabombinable]

25 minutes ago, Majestic said:

Well i'd start with replacing all of them with a kit (2 dimms) of 8GB. Be it CL8/9 1600 memory or better.

 

51GB/sec? My 2400 memory is at 29GB/s, how is that possible.

Dual channel......DDR3 1600 dual channel= around 25.6GB/sec, double the frequency or run the manual calculations and you get around 51GB/sec.

 

Edit: BTW, I seen the same speeds (but significantly higher latency) with my single 4GB DDR3 1333 stick as I do with 4GB dual channel DDR2 1066 5-6-6-18

[Majestic]

1 hour ago, Dabombinable said:

Dual channel......DDR3 1600 dual channel= around 25.6GB/sec, double the frequency or run the manual calculations and you get around 51GB/sec.

No it's around 25GB/s in dual channel. Single it's half of that. 

[Dabombinable]

22 minutes ago, Majestic said:

No it's around 25GB/s in dual channel. Single it's half of that. 

That's what I just said. DDR3 1600 dual channel= around 25.6GB/sec, double the frequency (DDR3 3200-my next target) or run the manual calculations (

https://en.wikipedia.org/wiki/Memory_bandwidth ) and you get around 51GB/sec. Yes, DDR3 can go that fast as long as the IMC can handle it.

[Majestic]

18 minutes ago, Dabombinable said:

That's what I just said. DDR3 1600 dual channel= around 25.6GB/sec, double the frequency (DDR3 3200-my next target) or run the manual calculations (

https://en.wikipedia.org/wiki/Memory_bandwidth ) and you get around 51GB/sec. Yes, DDR3 can go that fast as long as the IMC can handle it.

But the higher frequencies also have higher latency values. Effectively it's not that easy. Because, as I said, my 2400 memory doesn't even come close to 38GB/s

 

See attached files.

[Dabombinable]

14 minutes ago, Majestic said:

But the higher frequencies also have higher latency values. Effectively it's not that easy. Because, as I said, my 2400 memory doesn't even come close to 38GB/s

 

See attached files.

Only if you get a kit that has really bad timings. For example, dual channel DDR2 800 4-4-4-12 has higher latency than DDR2 1066 5-6-6-18. You can get low latency kits for all RAM. And I did say that the bandwidth depends on the IMC, which will be binned differently between CPU/North Bridge. And even if my 4790K turns out to have a shit IMC (which it might not, since it can run its NB at 4.8GHz with safe voltages, 1:1 ratio-but the bloody heat output is insane)