GPU RAM Speed not correct???

[TubsAlwaysWins]

Ok so on the 2 places I have looked (guru3d and MSI(s) website) my GPU (MSI R9 270X HAWK) is supposed to have 5600Mhz VRAM but mine is only at 1400 stock. What is going on here?

[Oshino Shinobu]

What program are you using to check it? It's most likely displaying the real/actual memory clock, while manufacturers will quote the effective clock. It's similar to how regular DDR clocks work. 

[TubsAlwaysWins]

Just now, Oshino Shinobu said:

What program are you using to check it? It's most likely displaying the real/actual memory clock, while manufacturers will quote the effective clock. It's similar to how regular DDR clocks work. 

MSI Afterburner under Memory Clock (slider)

[Droidbot]

3 minutes ago, TubsAlwaysWIns said:

Ok so on the 2 places I have looked (guru3d and MSI(s) website) my GPU (MSI R9 270X HAWK) is supposed to have 5600Mhz VRAM but mine is only at 1400 stock. What is going on here?

are you kidding me? the 1400 speed is the physical, and the 5600Mhz is the theoretical/effective speed.

 

[TubsAlwaysWins]

Just now, Droidbot said:

are you kidding me? the 1400 speed is the physical, and the 5600Mhz is the theoretical/effective speed.

 

???
 

[Oshino Shinobu]

2 minutes ago, TubsAlwaysWIns said:

MSI Afterburner under Memory Clock (slider)

Is that under load or at idle? If it's at idle, run a benchmark/game and see what it goes to. 

Also, check what GPU-Z reads

[Godlygamer23]

2 minutes ago, TubsAlwaysWIns said:

???
 

GDDR appears to complete four data operations per clock cycle, which is dubbed "quad-pumped." An effective clock is 4x=y where x is your real frequency, 4 is the number of data operations occurring per clock, and y is the effective clock.

 

So, 4(1400MHz)=5600MHz

x=1400MHz

y=5600MHz.

[Droidbot]

2 minutes ago, TubsAlwaysWIns said:

???
 

GDDR5 is quadruple pumped, so imagine 1400 (your afterburner memory clock) x 4 = 5600 (effective clock)

[TubsAlwaysWins]

2 minutes ago, Oshino Shinobu said:

Is that under load or at idle? If it's at idle, run a benchmark/game and see what it goes to. 

Also, check what GPU-Z reads

Under load (heaven benchmark) it stays at 1400, as well as at idle. Im downloading GPU-Z right now

[TubsAlwaysWins]

1 minute ago, Droidbot said:

GDDR5 is quadruple pumped, so imagine 1400 (your afterburner memory clock) x 4 = 5600 (effective clock)

Ah i see now. You learn something new every day

[TubsAlwaysWins]

4 minutes ago, Oshino Shinobu said:

Is that under load or at idle? If it's at idle, run a benchmark/game and see what it goes to. 

Also, check what GPU-Z reads

Ok thanks