a question about Tflops

[tomi832]

what exactly is Tflops?

If I understood it correctly, it's somewhat represents the power of the GPUs right? so how is it that the GTX 1060 has 4 Tflops, and the RX 480 has 5.7 Tflops yet they're kinda have the same power in gaming?

I thought about it, since also Ryzen is proven to be way more powerful than Kaby Lake yet in gaming he's not that good (for instance, the R7 1600 is stronger than the 7700 yet when it comes to gaming the 1600 performs worse) so maybe the 480 really is way stronger than the 1060 yet the game developers optimize their games for nVidia? IDK anymore....

thanks to anyone who helps

[TheRandomness]

tFlops is a value only used for comparing things when they can be 100% utilised in the program, and the program is 100% optimised. Otherwise, it's innacurate to judge two cards from each other from that value. 

[Uptivuptiz]

Read this and this and you'll know :3 But mayby its too nerdy...

Edited May 10, 2017 by simonbyrial
wrong link

[tomi832]

1 minute ago, TheRandomness said:

tFlops is a value only used for comparing things when they can be 100% utilised in the program, and the program is 100% optimised. Otherwise, it's innacurate to judge two cards from each other from that value. 

so technically, the 480 is much stronger than the 1060 yet most of the devs optimize their games more for nVidia? 

[TheRandomness]

1 minute ago, tomi832 said:

so technically, the 480 is much stronger than the 1060 yet most of the devs optimize their games more for nVidia? 

Or just, AMD takes time with their drivers. 

[tomi832]

3 minutes ago, simonbyrial said:

Read this and this and you'll know :3 But mayby its too nerdy...

 

ok thanks btw, why did you send here a link to a page on amazon?

 

2 minutes ago, TheRandomness said:

Or just, AMD takes time with their drivers. 

 

could be. it's a shame that Polaris actually has so much potential yet it performs about 2/3 of its power..or probably even less since the 1060 also doesn't perform 100% of its power. Yet it's like that with every card that AMD has (or at least, from what I can see). I have the R9 390 and it's 5.1 Tflops yet its weaker than the 1060...

Also, what about Ryzen? or you don't know about that?

[Technomancer__]

8 minutes ago, simonbyrial said:

Read this and this and you'll know :3 But mayby its too nerdy...

lol ware you buying stuff on amazon and had the link in the pasteboard or what is called

[Uptivuptiz]

2 minutes ago, tomi832 said:

 

ok thanks btw, why did you send here a link to a page on amazon?

 

 

could be. it's a shame that Polaris actually has so much potential yet it performs about 2/3 of its power..or probably even less since the 1060 also doesn't perform 100% of its power. Yet it's like that with every card that AMD has (or at least, from what I can see). I have the R9 390 and it's 5.1 Tflops yet its weaker than the 1060...

Also, what about Ryzen? or you don't know about that?

Whoops... Wrong link. I have fixed it now.

[astrosheen]

7 minutes ago, tomi832 said:

what exactly is Tflops?

If I understood it correctly, it's somewhat represents the power of the GPUs right? so how is it that the GTX 1060 has 4 Tflops, and the RX 480 has 5.7 Tflops yet they're kinda have the same power in gaming?

I thought about it, since also Ryzen is proven to be way more powerful than Kaby Lake yet in gaming he's not that good (for instance, the R7 1600 is stronger than the 7700 yet when it comes to gaming the 1600 performs worse) so maybe the 480 really is way stronger than the 1060 yet the game developers optimize their games for nVidia? IDK anymore....

thanks to anyone who helps

 

Tflops is trillion of floating point operations per second. Most graphic rendering is based around the floating point operation so it is an indication of graphical performance. There are other factors when comparing graphics cards ie memory size and speed also how the textures are handled by the memory. As @TheRandomness mentions drivers will play a factor when comparing cards. Shitty drivers will lead to shitty performance. 

[Uptivuptiz]

Just now, Ethocreeper said:

lol ware you buying stuff on amazon and had the link in the pasteboard or what is called

Was helping another dude in another threat lol 

[tomi832]

1 minute ago, simonbyrial said:

Whoops... Wrong link. I have fixed it now.

ok lol

1 minute ago, astrosheen said:

Tflops is trillion of floating point operations per second. Most graphic rendering is based around the floating point operation so it is an indication of graphical performance. There are other factors when comparing graphics cards ie memory size and speed also how the textures are handled by the memory. As @TheRandomness mentions drivers will play a factor when comparing cards. Shitty drivers will lead to shitty performance. 

yeah, it does make since that if the Drivers are not good enough than the card won't perform good enough...for it's power.

about the Memory, the memory bandwidth of the 480 is bigger than the 1060's bandwidth...and yeah, I know that you just wanted to say the Tflops technically doesn't represent all of the power yet most of the physical power.

 

so technically, Tflops represent the raw power of the Chip?

 

also if I may ask another question, what do the ROPs, TMUs and Shading Units do? I know that the TMUs are about creating the textures and "painting the 3D work", so what do the processors do?

[astrosheen]

Just now, tomi832 said:

ok lol

yeah, it does make since that if the Drivers are not good enough than the card won't perform good enough...for it's power.

about the Memory, the memory bandwidth of the 480 is bigger than the 1060's bandwidth...and yeah, I know that you just wanted to say the Tflops technically doesn't represent all of the power yet most of the physical power.

 

so technically, Tflops represent the raw power of the Chip?

 

also if I may ask another question, what do the ROPs, TMUs and Shading Units do? I know that the TMUs are about creating the textures and "painting the 3D work", so what do the processors do?

 

Well now you are getting into the architecture of the AMD and Nvidia GPU and that gets a bit beyond my knowledge. If you really want to know more it may pay to do your own research as it becomes a very technical topic with how the parts of the GPU interact and how the parts will increase performance.

[tomi832]

16 minutes ago, astrosheen said:

Well now you are getting into the architecture of the AMD and Nvidia GPU and that gets a bit beyond my knowledge. If you really want to know more it may pay to do your own research as it becomes a very technical topic with how the parts of the GPU interact and how the parts will increase performance.

 

ok thanks

btw, from what I've seen flops are calculated by multiplying the number of cores by their frequency and than by 2 because it's 2 instructions per cycle or something like that, but what about IPC? it's not like we have the perfect cores that they can do 1 instruction per cycle...?

[astrosheen]

1 minute ago, tomi832 said:

btw, from what I've seen flops are calculated by multiplying the number of cores by their frequency and than by 2 because it's 2 instructions per cycle

 

This is the basic and crude way of the calculation but its good enough.

 

4 minutes ago, tomi832 said:

what about IPC

IPC. Instructions Per Clock/cycle is to do with the cpu. Again can get quite technical and to find out how this can be improved and lead to a higher performance you would need to look into CPU architecture which is a completely different beast to GPUs. Yes modern CPUs do not perform at 1 IPC(more like 8-32 depending on the cpu and precision) but there was a time where all CPU's did run at 1 IPC.

[tomi832]

1 minute ago, astrosheen said:

This is the basic and crude way of the calculation but its good enough.

 

IPC. Instructions Per Clock/cycle is to do with the cpu. Again can get quite technical and to find out how this can be improved and lead to a higher performance you would need to look into CPU architecture which is a completely different beast to GPUs. Yes modern CPUs do not perform at 1 IPC(more like 8-32 depending on the cpu and precision) but there was a time where all CPU's did run at 1 IPC.

 

wait a second...so CPUs today have more than 1 IPC? I thought that it's smaller than 1 and that the perfect core would run with 1 IPC...good to know I guess.

so what's the IPC of GPUs? I mean, of course there's a big variety since there are many GPUs but do you know maybe what's the IPC of a Cuda core today? and what about the IPC of a SP? probably worse than a Cuda since AMD's GPUs have more Tflops than nVidia's no?

[astrosheen]

9 minutes ago, tomi832 said:

 

wait a second...so CPUs today have more than 1 IPC? I thought that it's smaller than 1 and that the perfect core would run with 1 IPC...good to know I guess.

so what's the IPC of GPUs? I mean, of course there's a big variety since there are many GPUs but do you know maybe what's the IPC of a Cuda core today? and what about the IPC of a SP? probably worse than a Cuda since AMD's GPUs have more Tflops than nVidia's no?

 

 

here is some good discussion on why CPU's can do over 1 IPC https://electronics.stackexchange.com/questions/123760/how-can-a-cpu-deliver-more-than-one-instruction-per-cycle

Take a look at this too. It might answer some of the stuff around the IPC of GPUs