Under $225 on Ebay, and all are upgradeable.
i5/i7, some with dGPU, no soldered ram, the "s" models do not have upgradeable CPU's:
Lenovo,T420/T520/T420s=$>100.
T430/T530/T430s/Dell, E6430=$90-120.
T440p/T540p/x230/Dell, E6440= $150-$225.
W520=$200-$225.
Between $226-$500 ALL "W, and "P"" series Lenovo's have a dGPU
Almost ALL W, and P series lenovo's are Quad Cores:
T440p/T540p >$250.
Lenovo W530=$275-$300.
W540/W541/Dell, M4800=$350-$450.
Lenovo, P50 (low end, CPU non-upgradeable)=$500.
Between $500-$700 (non-upgradeable CPU):
Acer Nitro5, Intel powered=$500-$575.
P50=$500-$700, depending on configuration.
T460p/T470p=$575-$625.
Dell 17 Inspiron 7778 (17", reliable 1080p IPS touchscreen)/other high-end Dells=$650-$700.
Also in the $600-$700 price range, you can get a good quality, used, MSI, or Asus ROG.
The above laptops are pretty much the ONLY ones I recommend in these price ranges.
Avoid the Lenovo, T440,T450,T460,T470,(x240, and<), and their "s" versions UNLESS you're doing ONLY basic computing, or coding, and need the battery life.
Avoid ANY HP's in these price ranges. HP put out some REAL turds during this period of time.
Most used gaming machines are reasonably decent in the $350-$700 price range. Avoid the Lenovo "Y" series, and Legions. They have reliability issues.
i5/i7, some with dGPU, no soldered ram, the "s" models do not have upgradeable CPU's:
Lenovo,T420/T520/T420s=$>100.
T430/T530/T430s/Dell, E6430=$90-120.
T440p/T540p/x230/Dell, E6440= $150-$225.
W520=$200-$225.
Between $226-$500 ALL "W, and "P"" series Lenovo's have a dGPU
Almost ALL W, and P series lenovo's are Quad Cores:
T440p/T540p >$250.
Lenovo W530=$275-$300.
W540/W541/Dell, M4800=$350-$450.
Lenovo, P50 (low end, CPU non-upgradeable)=$500.
Between $500-$700 (non-upgradeable CPU):
Acer Nitro5, Intel powered=$500-$575.
P50=$500-$700, depending on configuration.
T460p/T470p=$575-$625.
Dell 17 Inspiron 7778 (17", reliable 1080p IPS touchscreen)/other high-end Dells=$650-$700.
Also in the $600-$700 price range, you can get a good quality, used, MSI, or Asus ROG.
The above laptops are pretty much the ONLY ones I recommend in these price ranges.
Avoid the Lenovo, T440,T450,T460,T470,(x240, and<), and their "s" versions UNLESS you're doing ONLY basic computing, or coding, and need the battery life.
Avoid ANY HP's in these price ranges. HP put out some REAL turds during this period of time.
Most used gaming machines are reasonably decent in the $350-$700 price range. Avoid the Lenovo "Y" series, and Legions. They have reliability issues.

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