280X and 6850 - Bottleneck? : BitcoinMining

[Build Help] $1500 gamer, multi-screen capability, with some scryptcoin mining/protein folding/video editing on the side

I tried this in /buildapcforme and didn't get any response, but I don't think I need help from scratch since I already have an idea of what I want in terms of parts, so here's a shortened copypaste:
Uses:
Budget: As cheap as possible. I'll go over no more than $2000 if need be for the triple-monitor capability.
Will you be overclocking? If yes, are you interested in overclocking right away, or down the line? CPU and/or GPU?
If there's any specific features you want/need from the rig, please list them.
Do you have any specific case preferences such as a window or LEDs, or do you have a preference for low-noise components?
Extra info:
Here's my blind foray example build:
PCPartPicker part list / Price breakdown by merchant / Benchmarks
Type Item Price
CPU Intel Core i7-4770K 3.5GHz Quad-Core Processor $319.99 @ SuperBiiz
CPU Cooler Corsair H55 57.0 CFM Liquid CPU Cooler $54.99 @ Amazon
Motherboard MSI Z87-G45 Gaming ATX LGA1150 Motherboard $146.13 @ Newegg
Memory Crucial Ballistix Sport 8GB (1 x 8GB) DDR3-1600 Memory $59.99 @ Newegg
Storage Kingston SSDNow V300 Series 120GB 2.5" Solid State Disk $79.76 @ Amazon
Storage Western Digital Caviar Blue 1TB 3.5" 7200RPM Internal Hard Drive $59.98 @ OutletPC
Video Card Asus Radeon R9 280X 3GB Video Card (2-Way CrossFire) $319.99 @ B&H
Video Card Asus Radeon R9 280X 3GB Video Card (2-Way CrossFire) $319.99 @ B&H
Case Corsair 200R ATX Mid Tower Case $54.98 @ Newegg
Power Supply Corsair Enthusiast 850W 80+ Bronze Certified Semi-Modular ATX Power Supply $104.99 @ Newegg
Optical Drive Asus DRW-24B1ST/BLK/B/AS DVD/CD Writer $19.98 @ OutletPC
Total
Prices include shipping, taxes, and discounts when available. $1520.77
Generated by PCPartPicker 2013-12-25 05:31 EST-0500
With that build, what are your thoughts on the 2x R9 280x's? I'm having trouble finding comparable benchmarks, other than this which only compares it to lower-scoring GPUs. I see them as providing a fair amount of number crunching capability (aka mining), as well as being still top-of-the-line graphics for gaming. I probably shouldn't concern myself with mining if I can get a better performance out of games with a single GPU for less $.
I've never SLI'd or CF'd and everywhere I see it mentioned, I notice people have problems with it or that it doesn't always work. What should I know about multi-GPU setups?
I notice a lot of budget builds use an AMD CPU. How much can I expect out of the 4770k over a similar AMD cpu like the FX-9590 or 8350 (a much cheaper one), aside from the marginal chance in benchmark scores?
I could save getting a cheaper PSU probably.
I live near a Microcenter. I'm guessing their prices are lower for pickups.
Sorry for the long post. I hope it doesn't scare anyone off! I'm just not going to drop $1,500 without properly educating myself first.
Thanks!
submitted by kawfey to buildapc [link] [comments]

LITECOIN ( LTC ) mining performance of AMD RADEON R9 series - R9 270X / R9 280X / R9 290 / R9 290X 1500KH/s R9 280X Mining Rig Colombia Litecoin Mining rig ( 1,5 mh/s , 2x Sapphire R9 280x OC ) GPU Bitcoin Mining Rig Update (Sapphire R9 280 OC) Gigabyte Windforce R9 280x 22Mh/s GPU Mining Ethereum (7970)

autodetect my hardware For Windows 64bit users only. or. Manual Selection. CPU, GPU & ASIC. ENTER HARDWARE MANUALLY. MINING ECOSYSTEM How does NiceHash work for you? Everyone can start mining without the need for deep technical knowledge about cryptocurrency mining. It is tailored for ease of use and features a very simple interface. When running, NiceHash Miner is connected to NiceHash ... GPU and CPU Benchmarks for Monero Mining. RANDOMX BENCHMARKS FOR MONERO MINING! Monero Price: 132.49 $, 111 .91 €, BTC-XMR: 0.01009 - Time: 2020-Oct-25 15:20 America/New_York Looking for Cryptonight Benchmarks?: cryptonight.monerobenchmarks.info Windows 10 tuning guide for RandomX mining: REDDIT POST Most popular hardware on this: LIST. Home; Menu. HOW-TO Start Mining Monero; Mining ... In short, don’t focus on mining Bitcoin, Litecoin, Ethereum or other currencies that are difficult to mine and you need hardware of 100+ thousands of EUR. Focus on currencies that can quickly be mined and monetized, converted into cash or for buying other cryptocurrrencies or if you plan to invest them in the long run. Just download the program, choose one or more currencies for mining ... Crossfire / eyefinity on the 280X is still broken and has been for years (with the 7970, which is the same card). This isn't the case with the 770. Anyway, If you get an aftermarket 770, you can overclock to have a meaningful increase. 3DJuegos / ; Foro / ; Foro Hardware y presupuestos / ; Tema PcCom Miner Fx-6300/4Gb/1Tb/R9 280x Crossfire

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LITECOIN ( LTC ) mining performance of AMD RADEON R9 series - R9 270X / R9 280X / R9 290 / R9 290X

¡PARA UNA MEJOR EXPERIENCIA, ACTIVAR LAS ANOTACIONES! Como pueden observar, es un montaje de dos tarjetas SAPPHIRE R9 280X con una configuración normal sin o... Quick update on the new Bitcoin mining rig that I built. Get $10 free on Coinbase when you spend of sell more than $100: https://www.coinbase.com/join/54bb23... A short video sharing my Ethereum mining results with a R9 280x Hardware used in this video Gigabyte R9 280X 3GB US http://amzn.to/1VS6P5T UK http://amzn.to/... BITCOIN MINING - USB Block Erutper on MAC Pro OS X using BitMinter ... Pohodacik 007 3,337 views. 1:00. Bitcoin Mining on Old Hardware; The Intel Celeron Coppermine CPU 900MHz - Duration: 14 :28 ... My Second litecoin Mining rig Test 1 with two Sapphire r9 280x OC graphiccards Result: 750 - 770 kh/s per Card.

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