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maks35353
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Ones for GPUs (GDDR) and the other is for a CPU. There is no relation between the two.

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What is the difference between GDDR5 and DDR4 . Are they different things or what?

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Ones for GPUs (GDDR) and the other is for a CPU. There is no relation between the two.

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Just now, Lurick said:

Ones for GPUs (GDDR) and the other is for a CPU. There is no relation between the two.

Sorry I'm kinda new :P

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1 minute ago, maks35353 said:

Sorry I'm kinda new :P

All good, better to ask and learn :)

 

Seen quite a few threads asking similar questions to this and it's more common than you think for people to not know. Just for more information, you could put a GDDR5 or whatever GDDR generation on a motherboard with DDR2 or DDR (provided the board had a PCIe slot) and there wouldn't be any incompatibility issues. Obviously in such a scenario your GPU would be severely limited by whatever old CPU the board took but that's a different discussion :)

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GDDR cycles faster, so higher bandwidth and lower latency. However they also lose memory faster so they have to be refreshed after about equally many cycles as DDR 

CPU: i7-2600K 4751MHz 1.44V (software) --> 1.47V at the back of the socket Motherboard: Asrock Z77 Extreme4 (BCLK: 103.3MHz) CPU Cooler: Noctua NH-D15 RAM: Adata XPG 2x8GB DDR3 (XMP: 2133MHz 10-11-11-30 CR2, custom: 2203MHz 10-11-10-26 CR1 tRFC:230 tREFI:14000) GPU: Asus GTX 1070 Dual (Super Jetstream vbios, +70(2025-2088MHz)/+400(8.8Gbps)) SSD: Samsung 840 Pro 256GB (main boot drive), Transcend SSD370 128GB PSU: Seasonic X-660 80+ Gold Case: Antec P110 Silent, 5 intakes 1 exhaust Monitor: AOC G2460PF 1080p 144Hz (150Hz max w/ DP, 121Hz max w/ HDMI) TN panel Keyboard: Logitech G610 Orion (Cherry MX Blue) with SteelSeries Apex M260 keycaps Mouse: BenQ Zowie FK1

 

Model: HP Omen 17 17-an110ca CPU: i7-8750H (0.125V core & cache, 50mV SA undervolt) GPU: GTX 1060 6GB Mobile (+80/+450, 1650MHz~1750MHz 0.78V~0.85V) RAM: 8+8GB DDR4-2400 18-17-17-39 2T Storage: HP EX920 1TB PCIe x4 M.2 SSD + Crucial MX500 1TB 2.5" SATA SSD, 128GB Toshiba PCIe x2 M.2 SSD (KBG30ZMV128G) gone cooking externally, 1TB Seagate 7200RPM 2.5" HDD (ST1000LM049-2GH172) left outside Monitor: 1080p 126Hz IPS G-sync

 

Desktop benching:

Cinebench R15 Single thread:168 Multi-thread: 833 

SuperPi (v1.5 from Techpowerup, PI value output) 16K: 0.100s 1M: 8.255s 32M: 7m 45.93s

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GDDR5 can transfer 4 bits of information with every cycle (each Hz), DDR4 can transfer 2.

DDR4 is better for accessing lots of different sizes of data from ram, gddr5 is "tweaked" more for video card usage, more specific ways of reading and writing data to memory.

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