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VRAM frequency vs. Latency

Oct 11, 2018
2 (0.33/day)
Anyone knows if games generally favors high frequency over low latency VRAM?
I'm asking because I modified the bios on my Rx 580 to use the 1900MHz memory strap above 2000MHz. Before the bios mod I clocked the Vram @2400MHz, after the mod Max is about 2150MHz but my 3Dmark score increased. So I'm wondering if games also prefer low latency VRAM, but I don't have any games with reliable benchmarks. Searching Google only displays results related to mining or regular system RAM. But I read somewhere that graphics is all about bandwidth (MHz) but this was related to integrated graphics, so I don't know if dedicated graphics also prefer high frequency.
I'm guessing it's probably a balance between frequency and timings but would like to know.
Jun 15, 2016
374 (0.44/day)
System Name My PC
Processor 4670K@4.4GHz
Motherboard Gryphon Z87
Cooling CM 212
Memory 2x8GB+2x4GB @2400GHz
Video Card(s) XFX Radeon RX 580 GTS Black Edition 1425MHz OC+, 8GB
Storage Intel 530 SSD 480GB + Intel 510 SSD 120GB + 2x500GB hdd raid 1
Display(s) HP envy 32 1440p
Case CM Mastercase 5
Audio Device(s) Sbz Zxr
Power Supply Antec 620W
Mouse G502
Keyboard G910
Software Win 10 pro
Balance is the key here leave it @2000MHz
May 8, 2016
578 (0.65/day)
System Name BOX
Processor Xeon E5-1680 v2 @ 4,3GHz
Motherboard Sabertooth X79 (BIOS 4801 + NVMe mod + uCode update)
Cooling Thermalright Venomous-X (w/LGA 2011 kit) + 2x Delta PWM Push-Pull
Memory 8x A-Data Xtreme 2000X 2GB (1868MHz CL8.9.8.24 CR2T @ 1,65V)
Video Card(s) ASUS GTX 1080 (FE)
Storage Samsung SM961 256GB NVMe, RAID0 2x WD10EZEX (1TB), HGST HUS726060ALE610 (6TB)
Display(s) Samsung T240
Case NZXT Tempest (Nanoflux/PWM fans only, some w/LEDs)
Audio Device(s) ASUS Essence ST Deluxe 7.1
Power Supply Seasonic X-760 (760W)
Mouse Roccat Savu
Keyboard Logitech UltraXPremium
Software Windows 10 Pro x64
Benchmark Scores https://www.passmark.com/baselines/V9/display.php?id=108080818886
It's usefull to have both.
They simply come to play at different times (and actual gain from either, depends on gpu architecture).
Short version :
Bandwidth is needed always (because creating pixels is VERY data manipulation intensive and it has to go/come from somewhere).
If GPU has the compute power, bandwidth is essencial to keep it "fed" and operate at peak values.
Latency on the other hand is good to have for efficient use of GPUs power (less time it takes to deliver new data, the faster work can start on it).
But getting large ammounts of data at the quickest time isn't easy.
That's why most newer GPUs "hide" latency behind complex instructions (for data already operated on), and large caches.
It gives memory/IMC time to deliver the next batch for processing.

GTX 1070 Ti vs. GTX 1080 is great example of this.
G5 VRAM on former has tighter latency, while G5X VRAM on latter has higher bandwidth throughput.
Still, it's a Pascal example, while you own GCN.
Last edited:
Oct 11, 2018
2 (0.33/day)
Forgot to mention my Rx 580 is the 4GB version so default ram frequency is only 1750.
Kastriot: Why do you think 2000MHz is faster than 2150MHz, do you mean I should find the lowest memory strap that's stable @2GHz?